body
{
  background-color:rgba(25,25,255,0.2);
}
.section-1
{
    padding: 0;
    margin: 0;
    background-color: rgba(0,215,255,0.9);
    box-shadow: 0px 0px 15px rgba(0,0,0,0.9);
}
.section-1
{
    color:rgba(0,0,0,0.9);
    font-variant: small-caps;
    font-size: 30rem;
}
.section-2
{
    background-color: rgba(25,0,0,0.5);
}
.coloumn
{
    padding:5rem;
    text-align: center;
}
.btn
{
    padding: 2rem;
    position: relative;
    overflow: hidden;
    z-index: 1;
    color: black;
    font-weight: bold;
    box-shadow:0px 0px 10px rgba(0,0,0,1);
}
.btn:hover
{
    color: white;
}
.btn::after
{
    content: "";
    position: absolute;
    display: block;
    background-color: black;
    height: 100%;
    width: 100%;
    z-index: -1;
    transition: all 0.4s ease-in-out;
}

.left::after
{
    left:-100%;
    top:0;
}
.right::after
{
    right:-100%;
    top:0;
}
.top::after
{
    top:-100%;
    left: 0;
}

.bottom::after
{
    bottom:-100%;
    left: 0;
}

.slide_from_left:hover::after
{
    left: 0;
    transition: all 0.4s ease-in-out;
}
.slide_from_right:hover::after
{
    right: 0;
    transition: all 0.4s ease-in-out;
}
.slide_from_top:hover::after
{
    top: 0;
    transition: all 0.4s ease-in-out;
}
.slide_from_bottom:hover::after
{
    bottom: 0;
    transition: all 0.4s ease-in-out;
}
.grow_out::after
{
    left: 0;
    top: 0;
    transform: scale(0);
}
.grow_from_center:hover::after
{
    transform: scale(1);
}

.grow_in
{
    color: white;
}

.grow_in:hover
{
    color: black;
    border-color: black;
}
.grow_in::after
{
    transform: scale(1);
    left: 0;
    top:0;
}

.grow_in_out:hover::after
{
    transform: scale(0);
}