header{
    background-color: #1b102d00;
}
header button{
   float: right;
   font-size: 30px;
   color: #61b6ac;
}
.shadow{
    text-shadow: 1px 1px 2px #ffffffc0;

}
body{
    margin: 0;
    height: 100%;
    background-image: linear-gradient(210deg , #1c2c48, #081932, #071222) ;
    color: #C8D5F3;
}
html, body { min-height: 100%;}
.main{
    height: 100%;
    margin: 5%;

}
a{
    color: #4f7cf8 ;
    text-decoration: underline !important; 
    text-shadow: 0px 0px 2px #ffffff00 !important; 
}
.float_div{
    position: fixed;
    color: #b2c1e1 !important;
    width: 20px;
    right: 20px;
    bottom: 0px;
    font-size: 19px;
}
.float_div a{
    color: #9fadca !important;
    padding-bottom: 200px;
    line-height: 40px;
}
.vertical_line{
    background-color: #b2c1e1;
    width: 1px;
    height: 110px;
    margin: auto;
    margin-top: 20px;
}












.back_ground{
    position: absolute; 
    z-index: -1; 
    top: 0;
    width: auto;
    height: auto;
}
.ball{
    background-color: #5f84e88e;
    width: 7px;
    height: 7px;
    border-radius: 100%;
    position: absolute; 
    z-index: -1; 
    top: 20px;
    left: 30px;
}
.shell{
    color: #0ff000;
    font-size: 18px;
    text-shadow: 1px 1px 2px #036403;

}
.blob{
    background-color: #cc0d338f;
    border: #ec4e4ed1 solid 5px;
    width: 50px;
    height: 50px;
    border-radius: 100%;
    position: absolute; 
    z-index: -3; 
    top: 300px;
    left: 80px;
    animation: collision 1s forwards;
}
@keyframes collision {
    0% {
        width: 1px;
        height: 1px;
        border-width: 0px;
        margin: 0px;
        opacity: 0;
   }
    50% {
        width: 20px;
        height: 20px;
        border-width: 2px;
        margin-left: -10px;
        margin-top: -10px;

        opacity: 0.4;
    }
    100% {
        width: 40px;
        height: 40px;
        border-width: 10px;
        margin-left: -20px;
        margin-top: -20px;
        opacity: 0;
   }
  }