CSSのボックスモデルの構造をCSSアニメーションで可視化

サイト構築 -CSS

Post on:2021年2月1日

sponsors

生成 AI と著作権？5分で分かるAdobe Fireflyの安全な商用利用のための設計 | アドビ公式

CSSのボックスモデルの構造をCSSアニメーションで可視化したインタラクティブなデモを紹介します。

こういうのを実装する機会は限られますが、何かあった時にやってみたいですね。

CSSのボックスモデルをCSSアニメーションで可視化

最近のボックスモデルについての詳しい解説は、以前の記事をご覧ください。

CSSのボックスモデルにおける古い方法とこれからの方法

実際の動作は、下記でお楽しみください。
サイズがここだと小さいので、下部の0.5xか上部のEditから見るとよいです。

See the Pen
Explode A Node: 3D Box Model by Adam Argyle (@argyleink)
on CodePen.

実装コードは、下記の通り。

<div class="stack">
  <div class="content card">
    <p><b><span id="desktop-prompt">Hover</span><span id="mobile-prompt">Tap</span> me!</b></p>
  </div>
  <div class="padding card"></div>
  <div class="border card"></div>
  <div class="background card"></div>
  <div class="box-shadow card"></div>
</div>

<p><b><span id="desktop-prompt">Hover</span><span id="mobile-prompt">Tap</span> me!</b></p>

</div>

</div>

CSSの表現力もかなりパワーアップしていますね。

@use postcss-preset-env {
  stage: 0
}

.stack {
  display: grid;
  grid: [stack] / [stack];
  perspective: 5000;
  
  &:before {
    content: "";
    position: fixed;
    inset: 0;
    background: lch(95 0 0);
    transition: background 2s ease;
    pointer-events: none;
  }
  
  &:matches(:hover, :active) {
    &:before {
      background: lch(15 0 0);
    }
  }
  
  &:matches(:hover, :active) .card {
    --bg-opacity: 5%;
    transition-duration: 2s;
    transition-timing-function: var(--easeInOutCirc);
    transform: 
      rotateX(45deg) rotate(45deg) 
      translateZ(var(--z-offset)) translateY(20vh) translateX(20vh)
    ;
    
    &:nth-child(1) { --z-offset: 75vh; }
    &:nth-child(2) { --z-offset: 50vh; }
    &:nth-child(3) { --z-offset: 25vh; }
    &:nth-child(4) { --z-offset: 0vh; }
    &:nth-child(5) { --z-offset: -25vh; }
    
    &:nth-child(1)::after { transition-delay: 1.5s; }
    &:nth-child(2)::after { transition-delay: 1.7s; }
    &:nth-child(3)::after { transition-delay: 1.9s; }
    &:nth-child(4)::after { transition-delay: 2.1s; }
    &:nth-child(5)::after { transition-delay: 2.3s; }
    
    &::after {
      opacity: 1;
      transform: rotate(-45deg) rotateY(45deg) translateX(0px);
    }
    
    &.content {
      background: transparent;
      color: white;
      border-color: transparent;
      transition: 
        border-color 1s var(--easeInOutCirc) 0s,
        background-color 1s var(--easeInOutCirc) 0s,
        color 1s var(--easeInOutCirc) 0s,
        transform 2s var(--easeInOutCirc) 0s;
    } 
    
    &.padding {
      transition-delay: .1s;
    }
    
    &.border {
      transition-delay: .2s;
    }
    
    &.background {
      background: white;
      transition: 
        background-color 2s var(--easeInOutCirc) .3s, 
        transform 2s var(--easeInOutCirc) .2s;
    }
    
    &.box-shadow {
      transition-delay: .4s;
      box-shadow:
        0 -1px 25px rgba(0, 0, 0, 0.4),
        0 7.6px 6.1px rgba(0, 0, 0, 0.051),
        0 14.3px 11.5px rgba(0, 0, 0, 0.059),
        0 25.5px 20.5px rgba(0, 0, 0, 0.07),
        0 47.6px 38.4px rgba(0, 0, 0, 0.094),
        0 114px 92px rgba(0, 0, 0, 0.19)
      ;
    }
  }
}

.card {
  grid-area: stack;
  
  --z-offset: 0;
  --easeInOutCirc: cubic-bezier(0.85, 0, 0.15, 1);
  --bg-opacity: 0%;
  
  transition: transform 4s ease;
  
  inline-size: 40vmin;
  block-size: 40vmin;
  box-sizing: border-box;
  color: white;
  box-siing: border-box;
  background: lch(100 0 0 / 5%);
  position: relative;
  
  @media (orientation: landscape) {
    inline-size: 40vh;
    block-size: 40vh;
  }
  
  @media (max-width: 540px) {
    inline-size: 60vw;
    block-size: 60vw;
  }
  
  &:nth-child(1) {
    z-index: 3;
  }
  
  &:nth-child(2) {
    z-index: 2;
  }
  
  &::after {
    content: "Box";
    position: absolute;
    left: -45%;
    top: 110%;
    font-size: 1.25rem;
    text-shadow: 0 1px 3px lch(0 0 0 / 75%);
    white-space: nowrap;
    padding: 1ch 2ch;
    border-radius: 4ch;
    opacity: 0;
    transition: opacity .5s ease 0s, transform .5s ease;
    transform: rotate(-45deg) rotateY(45deg) translateX(20px);
    background: lch(0 0 0 / 70%);
    
    @media (max-width: 540px) {
      left: -20%;
      top: 70%;
    }
  }
  
  &.content {
    z-index: 5;
    transition: 
      border-color 4s ease,
      background-color 5s ease 2s,
      color 4s ease 0s,
      transform 4s ease 0s;
    padding: 5vmin;
    font-size: max(2.5vmin, .9rem);
    line-height: 1.5;
    background: lch(100 0 0);
    border: 5px solid hotpink;
    color: black;
    
    &::after { 
      content: "Content Box"; 
      left: -50%;
      
      @media (max-width: 540px) {
        left: -23%;
      }
    }
  }
  
  &.padding {
    background: transparent;
    z-index: 4;
    transition-delay: .1s;
    
    &::after { content: "Padding Box"; }
    &::before {
      content: "";
      position: absolute;
      inset: 0;
      clip-path: polygon(
        0% 0%, 0% 100%, 
        5vmin 100%, 5vmin 5vmin, 
        calc(100% - 5vmin) 5vmin, 
        calc(100% - 5vmin) calc(100% - 5vmin), 
        5vmin calc(100% - 5vmin), 5vmin 100%, 
        100% 100%, 100% 0%
      );
      background: repeating-linear-gradient(
        -45deg, 
        cyan, cyan 1px, 
        lch(100 0 0 / 5%) 1px, lch(100 0 0 / 5%) 10px
      );
    }
  }
  
  &.border {
    z-index: 3;
    background: transparent;
    transition-delay: .2s;
    
    &::after { content: "Border Box"; }
    &::before {
      content: "";
      position: absolute;
      inset: 0;
      clip-path: polygon(
        0% 0%, 0% 100%, 
        5px 100%, 5px 5px, 
        calc(100% - 5px) 5px, 
        calc(100% - 5px) calc(100% - 5px), 
        5px calc(100% - 5px), 5px 100%, 
        100% 100%, 100% 0%
      );
      background: linear-gradient(hotpink, hotpink);
    }
  }
  
  &.background {
    z-index: 2;
    transition: 
      background-color 4s ease .3s,
      transform 4s ease .3s; 

    &::after { content: "Background Box"; }
  }
  
  &.box-shadow {
    z-index: 1;
    background: transparent;
    transition: 
      box-shadow 4s ease .4s,
      transform 4s ease .4s; 
    
    box-shadow:
      0 2.8px 2.2px rgba(0, 0, 0, 0.02),
      0 6.7px 5.3px rgba(0, 0, 0, 0.028),
      0 12.5px 10px rgba(0, 0, 0, 0.035),
      0 22.3px 17.9px rgba(0, 0, 0, 0.042),
      0 41.8px 33.4px rgba(0, 0, 0, 0.05),
      0 100px 80px rgba(0, 0, 0, 0.07)
    ;

    
    &::after { content: "Shadow Box"; }
  }
}

body {
  min-block-size: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: system-ui;
  background: lch(30 0 0);
}

p:first-of-type {
  margin-block-start: 0;
}

@media (hover:hover) {
  #mobile-prompt {
    display: none;
  }
} 

@media (hover:none) {
  #desktop-prompt {
    display: none;
  }
}

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

@use postcss-preset-env {

stage: 0

}

.stack {

display: grid;

grid: [stack] / [stack];

perspective: 5000;

&:before {

content: "";

position: fixed;

inset: 0;

background: lch(95 0 0);

transition: background 2s ease;

pointer-events: none;

}

&:matches(:hover, :active) {

&:before {

background: lch(15 0 0);

}

&:matches(:hover, :active) .card {

--bg-opacity: 5%;

transition-duration: 2s;

transition-timing-function: var(--easeInOutCirc);

transform:

rotateX(45deg) rotate(45deg)

translateZ(var(--z-offset)) translateY(20vh) translateX(20vh)

;

&:nth-child(1) { --z-offset: 75vh; }

&:nth-child(2) { --z-offset: 50vh; }

&:nth-child(3) { --z-offset: 25vh; }

&:nth-child(4) { --z-offset: 0vh; }

&:nth-child(5) { --z-offset: -25vh; }

&:nth-child(1)::after { transition-delay: 1.5s; }

&:nth-child(2)::after { transition-delay: 1.7s; }

&:nth-child(3)::after { transition-delay: 1.9s; }

&:nth-child(4)::after { transition-delay: 2.1s; }

&:nth-child(5)::after { transition-delay: 2.3s; }

&::after {

opacity: 1;

transform: rotate(-45deg) rotateY(45deg) translateX(0px);

}

&.content {

background: transparent;

color: white;

border-color: transparent;

transition:

border-color 1s var(--easeInOutCirc) 0s,

background-color 1s var(--easeInOutCirc) 0s,

color 1s var(--easeInOutCirc) 0s,

transform 2s var(--easeInOutCirc) 0s;

}

&.padding {

transition-delay: .1s;

}

&.border {

transition-delay: .2s;

}

&.background {

background: white;

transition:

background-color 2s var(--easeInOutCirc) .3s,

transform 2s var(--easeInOutCirc) .2s;

}

&.box-shadow {

transition-delay: .4s;

box-shadow:

0 -1px 25px rgba(0, 0, 0, 0.4),

0 7.6px 6.1px rgba(0, 0, 0, 0.051),

0 14.3px 11.5px rgba(0, 0, 0, 0.059),

0 25.5px 20.5px rgba(0, 0, 0, 0.07),

0 47.6px 38.4px rgba(0, 0, 0, 0.094),

0 114px 92px rgba(0, 0, 0, 0.19)

;

}

.card {

grid-area: stack;

--z-offset: 0;

--easeInOutCirc: cubic-bezier(0.85, 0, 0.15, 1);

--bg-opacity: 0%;

transition: transform 4s ease;

inline-size: 40vmin;

block-size: 40vmin;

box-sizing: border-box;

color: white;

box-siing: border-box;

background: lch(100 0 0 / 5%);

position: relative;

@media (orientation: landscape) {

inline-size: 40vh;

block-size: 40vh;

}

@media (max-width: 540px) {

inline-size: 60vw;

block-size: 60vw;

}

&:nth-child(1) {

z-index: 3;

}

&:nth-child(2) {

z-index: 2;

}

&::after {

content: "Box";

position: absolute;

left: -45%;

top: 110%;

font-size: 1.25rem;

text-shadow: 0 1px 3px lch(0 0 0 / 75%);

white-space: nowrap;

padding: 1ch 2ch;

border-radius: 4ch;

opacity: 0;

transition: opacity .5s ease 0s, transform .5s ease;

transform: rotate(-45deg) rotateY(45deg) translateX(20px);

background: lch(0 0 0 / 70%);

@media (max-width: 540px) {

left: -20%;

top: 70%;

}

&.content {

z-index: 5;

transition:

border-color 4s ease,

background-color 5s ease 2s,

color 4s ease 0s,

transform 4s ease 0s;

padding: 5vmin;

font-size: max(2.5vmin, .9rem);

line-height: 1.5;

background: lch(100 0 0);

border: 5px solid hotpink;

color: black;

&::after {

content: "Content Box";

left: -50%;

@media (max-width: 540px) {

left: -23%;

}

&.padding {

background: transparent;

z-index: 4;

transition-delay: .1s;

&::after { content: "Padding Box"; }

&::before {

content: "";

position: absolute;

inset: 0;

clip-path: polygon(

0% 0%, 0% 100%,

5vmin 100%, 5vmin 5vmin,

calc(100% - 5vmin) 5vmin,

calc(100% - 5vmin) calc(100% - 5vmin),

5vmin calc(100% - 5vmin), 5vmin 100%,

100% 100%, 100% 0%

);

background: repeating-linear-gradient(

-45deg,

cyan, cyan 1px,

lch(100 0 0 / 5%) 1px, lch(100 0 0 / 5%) 10px

);

}

&.border {

z-index: 3;

background: transparent;

transition-delay: .2s;

&::after { content: "Border Box"; }

&::before {

content: "";

position: absolute;

inset: 0;

clip-path: polygon(

0% 0%, 0% 100%,

5px 100%, 5px 5px,

calc(100% - 5px) 5px,

calc(100% - 5px) calc(100% - 5px),

5px calc(100% - 5px), 5px 100%,

100% 100%, 100% 0%

);

background: linear-gradient(hotpink, hotpink);

}

&.background {

z-index: 2;

transition:

background-color 4s ease .3s,

transform 4s ease .3s;

&::after { content: "Background Box"; }

}

&.box-shadow {

z-index: 1;

background: transparent;

transition:

box-shadow 4s ease .4s,

transform 4s ease .4s;

box-shadow:

0 2.8px 2.2px rgba(0, 0, 0, 0.02),

0 6.7px 5.3px rgba(0, 0, 0, 0.028),

0 12.5px 10px rgba(0, 0, 0, 0.035),

0 22.3px 17.9px rgba(0, 0, 0, 0.042),

0 41.8px 33.4px rgba(0, 0, 0, 0.05),

0 100px 80px rgba(0, 0, 0, 0.07)

;

&::after { content: "Shadow Box"; }

}

body {

min-block-size: 100vh;

display: flex;

align-items: center;

justify-content: center;

font-family: system-ui;

background: lch(30 0 0);

}

p:first-of-type {

margin-block-start: 0;

}

@media (hover:hover) {

#mobile-prompt {

display: none;

}

@media (hover:none) {

#desktop-prompt {

display: none;

}

CSSのボックスモデルの構造をCSSアニメーションで可視化

Related Posts

Sponsors

Recnet Entry

Pickup Entry

Category

Blog Info

CSSのボックスモデルの構造をCSSアニメーションで可視化

Related Posts

Sponsors

Recnet Entry

Pickup Entry

Recommend

Category

Blog Info