如何用純 CSS 創作一根閃電連線線
阿新 • • 發佈:2018-12-08
效果預覽
線上演示按下右側的“點選預覽”按鈕可以在當前頁面預覽,點選連結可以全屏預覽。
https://codepen.io/comehope/pen/RBjdzZ
可互動視訊
此視訊是可以互動的,你可以隨時暫停視訊,編輯視訊中的程式碼。
請用 chrome, safari, edge 開啟觀看。
https://scrimba.com/p/pEgDAM/cgkE6C6
原始碼下載
本地下載每日前端實戰系列的全部原始碼請從 github 下載:
https://github.com/comehope/front-end-daily-challenges
程式碼解讀
定義 dom,容器中包含 2 個元素,分別代表插頭和線纜:
<div class="cable">
<span class="head"></span>
<span class="body"></span>
</div>
居中顯示:
body { margin: 0; height: 100vh; display: flex; align-items: center; }
定義容器尺寸:
.cable {
display: flex;
align-items: center;
font-size: 10px;
margin-left: 5em;
}
畫出插頭的輪廓:
.head {
width: 8.5em;
height: 8.5em;
border-radius: 2em 0 0 2em;
}
畫出插頭上針腳的輪廓:
.head { position: relative; } .head::before { content: ''; position: absolute; width: 3em; height: 7.3em; top: calc((8.5em - 7.3em) / 2); left: 0.7em; border-radius: 1em; box-sizing: border-box; }
畫出線纜中手持部位的輪廓:
.body {
width: 15.5em;
height: 11em;
border-radius: 0.5em;
}
畫出線纜中稍粗部位的輪廓:
.body {
position: relative;
display: flex;
align-items: center;
}
.body::before {
content: '';
position: absolute;
width: 13.5em;
height: 6em;
left: 15.5em;
}
畫出線纜的延長線部分:
.body::after {
content: '';
position: absolute;
width: 100vh;
height: 3.9em;
left: calc(15.5em + 13.5em);
}
隱藏畫面外的部分:
body {
overflow: hidden;
}
接下來繪製細節。
為延長線塗上漸變色:
.body::after {
background:
linear-gradient(
white,
hsl(0, 0%, 96%) 5%,
hsl(0, 0%, 97%) 25%,
hsl(0, 0%, 95%) 40%,
hsl(0, 0%, 81%) 95%,
white
);
}
為線纜中稍粗部位塗上漸變色:
.body::before {
background:
linear-gradient(
white,
hsl(0, 0%, 96%) 5%,
hsl(0, 0%, 98%) 20%,
hsl(0, 0%, 95%) 50%,
hsl(0, 0%, 81%) 95%,
white
);
}
為線纜中手持部位塗上漸變色:
.body {
background:linear-gradient(
hsl(0, 0%, 91%),
white 15%,
hsl(0, 0%, 93%) 50%,
hsl(0, 0%, 87%) 70%,
hsl(0, 0%, 79%) 90%,
hsl(0, 0%, 84%),
hsl(0, 0%, 86%)
);
}
為插頭塗上漸變色:
.head {
background:
linear-gradient(
-45deg,
hsl(0, 0%, 75%),
hsl(0, 0%, 79%),
hsl(0, 0%, 78%),
hsl(0, 0%, 87%) 80%
);
}
在插頭上畫出針腳:
.head::before {
background-color: white;
}
.head::after {
content: '';
position: absolute;
box-sizing: border-box;
width: 2.2em;
height: 0.4em;
color: goldenrod;
background-color: currentColor;
border-radius: 0.5em;
left: 1.1em;
top: 1.2em;
box-shadow:
0 0.8em 0,
0 1.6em 0,
0 2.4em 0,
0 3.2em 0,
0 4em 0,
0 4.8em 0,
0 5.6em 0;
}
接下來新增陰影,使線纜更立體。
繪製插頭上的陰影:
.head {
background:
linear-gradient(
90deg,
transparent 80%,
rgba(0,0,0,12%)
),
linear-gradient(
-45deg,
hsl(0, 0%, 75%),
hsl(0, 0%, 79%),
hsl(0, 0%, 78%),
hsl(0, 0%, 87%) 80%
);
}
繪製線纜手持部分的陰影:
.body::before {
background:
linear-gradient(
45deg,
rgba(0,0,0,4%) 10%,
transparent 20%
),
linear-gradient(
90deg,
rgba(0,0,0,4%),
transparent 10%
),
linear-gradient(
white,
hsl(0, 0%, 96%) 5%,
hsl(0, 0%, 98%) 20%,
hsl(0, 0%, 95%) 50%,
hsl(0, 0%, 81%) 95%,
white
);
}
繪製線纜中稍粗部位的陰影:
.body::after {
background:
linear-gradient(
45deg,
rgba(0,0,0,4%),
transparent 4%
),
linear-gradient(
90deg,
rgba(0,0,0,4%),
transparent 2%
),
linear-gradient(
white,
hsl(0, 0%, 96%) 5%,
hsl(0, 0%, 97%) 25%,
hsl(0, 0%, 95%) 40%,
hsl(0, 0%, 81%) 95%,
white
);
}
最後,為畫面增加入場動畫
.cable {
animation: show 5s linear infinite;
}
@keyframes show {
0% {
transform: translateX(100vw);
}
20%, 100% {
transform: translateX(0);
}
}
大功告成!
原文地址:https://segmentfault.com/a/1190000015809333