How to create spin effect using HTML & CSS? - html

Question

I needed spinning effect on hover of that square, what i can get is written below.
HTML
<div class="mainSquare">
<div class="firstInnerSquare">
<div class="lastInnerSquare">
Hello
</div>
</div>
</div>
CSS
.mainSquare{
width:160px;
height:160px;
background:black;
margin: 50px auto;
padding:25px;
}
.firstInnerSquare{
width:110px;
height:110px;
background:red;
padding:25px;
}
.lastInnerSquare{
text-align:center;
width:110px;
padding: 46px 0px;
background:white;
}
Fiddle
Hope to get help.

Answer 1

You can do this by using a single element and two pseudos. Make the 2 pseudo elements larger than the container element, position them behind the container and add a rotate animation to them.
Note: This is only a base sample that would help you get started. I would leave the fine tuning part for you to handle. You can read more about the CSS animation properties in this MDN page.
.shape {
position: relative; /* used to position the pseudos relative to the parent */
height: 100px;
width: 100px;
background: white;
border: 1px solid;
margin: 100px; /* required because children are larger than parent */
}
.shape:after,
.shape:before {
position: absolute;
content: '';
}
.shape:before {
height: 125%; /* make one pseudo 25% larger than parent */
width: 125%;
top: -12.5%; /* 25/2 to make sure its center is same as the parent's */
left: -12.5%; /* 25/2 to make sure its center is same as the parent's */
background: red;
z-index: -1; /* send it behind the parent */
}
.shape:after {
height: 150%; /* make this pseudo larger than the parent and the other pseudo */
width: 150%;
top: -25%; /* 50/2 to make sure its center is same as the parent's */
left: -25%; /* 50/2 to make sure its center is same as the parent's */
background: black;
z-index: -2; /* send it behind both the parent and other pseudo */
}
/* add animation when hovering on parent */
.shape:hover:before {
animation: rotate 3s linear infinite;
}
.shape:hover:after {
animation: rotate-rev 3s linear infinite;
}
#keyframes rotate {
to {
transform: rotate(359deg); /* some browsers don't display spin when it is 360 deg */
}
}
#keyframes rotate-rev {
to {
transform: rotate(-359deg); /* reverse direction rotate */
}
}
<div class='shape'></div>

Answer 2

Here's one with the original structure and just one keyframe statement:
All that needs changing, per div, is the animation duration and direction. The "middle" div's timing needs to be 50% of the outer/inner.
.mainSquare {
width: 160px;
height: 160px;
background: black;
margin: 50px auto;
padding: 25px;
animation: spin 2s infinite linear;
}
.firstInnerSquare {
width: 110px;
height: 110px;
background: red;
padding: 25px;
animation: spin 1s infinite linear reverse;
}
.lastInnerSquare {
text-align: center;
width: 110px;
padding: 46px 0px;
background: white;
animation: spin 2s infinite linear;
}
#keyframes spin {
to {
transform: rotate(1turn);
}
}
<div class="mainSquare">
<div class="firstInnerSquare">
<div class="lastInnerSquare">
Hello
</div>
</div>
</div>