CSS
html {
font-size: 20px;
box-sizing: border-box;
}
body {
background-color: #1abc9c;
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
overflow: hidden;
}
.btn {
border: 5px solid #2c3e50;
color: #2c3e50;
display: block;
font-family: 'trebuchet ms';
font-size: 2rem;
letter-spacing: 0.1rem;
padding: 1rem;
position: relative;
text-decoration: none;
text-transform: uppercase;
}
.btn::before {
content: "";
background-color: #E26A6A;
box-shadow: 10px 10px 0 #F1C40F, 20px 20px 0 #3498DB;
position: absolute;
left: 0.25rem;
top: 0.5rem;
height: 102%;
width: 102%;
z-index: -1;
transition: all 0.4s ease;
}
.btn:hover::before {
box-shadow: none;
left: 0;
top: 0;
width: 100%;
height: 100%;
}
