.link_https {
    text-decoration: none;
    text-decoration-style: none;
    box-shadow: none;
}

#test{
    width:1000px;
    max-width:50%;
    display:flex;
    margin : auto;
}

.gif{
    height:100px;
    width: 100px;
    border-radius: 5%;
    border:solid #3841dd;
}

.gif:hover{
    background-image: url("../imgs/transi_1.gif");
    background-size: 100% 100%;
    background-repeat: no-repeat; 
    background-attachment: fixed;   
    background-position: center; 
}

#header{
    background: #4a51e4;
    font-family: Arial, Helvetica, sans-serif;
    margin: 0px auto;
    width: 100%;
    position: relative;
    padding: 0.3%;
}

.button_header {
    display: inline-block;
    border-radius: 5px;	
    box-shadow: 3px 3px 8px;
    padding: 0.5%;
    background: #4e54c8;
    color: rgba(230, 226, 221, 0.925);
    padding-left: 15px;
    padding-right: 15px;
    padding-top:10px;
    padding-bottom: 10px;
}

.button_header:hover {
    background: blue;
    transition: 0.5s;
}

#button_right {
    position: absolute;
    right: 20px;
    top: 5px;
}

@import url('https://fonts.googleapis.com/css?family=Exo:400,700');

*{
    margin: 0px;
    padding: 0px;
}

body{
    font-family: 'Exo', sans-serif;
}


.context {
    width: 100%;
    position: absolute;
    top:50vh;
    
}

.context h1{
    text-align: center;
    color: #fff;
    font-size: 50px;
}


.area{
    background: #4e54c8;  
    background: -webkit-linear-gradient(to left, #8f94fb, #4e54c8);  
    width: 100%;
    height:110vh;
    
   
}

.circles{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.circles li{
    position: absolute;
    display: block;
    list-style: none;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.2);
    animation: animate 25s linear infinite;
    bottom: -200px;
    
}

.circles li:nth-child(1){
    left: 25%;
    width: 80px;
    height: 80px;
    animation-delay: 0s;
}


.circles li:nth-child(2){
    left: 10%;
    width: 20px;
    height: 20px;
    animation-delay: 2s;
    animation-duration: 12s;
}

.circles li:nth-child(3){
    left: 70%;
    width: 20px;
    height: 20px;
    animation-delay: 4s;
}

.circles li:nth-child(4){
    left: 40%;
    width: 60px;
    height: 60px;
    animation-delay: 0s;
    animation-duration: 18s;
}

.circles li:nth-child(5){
    left: 65%;
    width: 20px;
    height: 20px;
    animation-delay: 0s;
}

.circles li:nth-child(6){
    left: 75%;
    width: 110px;
    height: 110px;
    animation-delay: 3s;
}

.circles li:nth-child(7){
    left: 35%;
    width: 150px;
    height: 150px;
    animation-delay: 7s;
}

.circles li:nth-child(8){
    left: 50%;
    width: 25px;
    height: 25px;
    animation-delay: 15s;
    animation-duration: 45s;
}

.circles li:nth-child(9){
    left: 20%;
    width: 15px;
    height: 15px;
    animation-delay: 2s;
    animation-duration: 35s;
}

.circles li:nth-child(10){
    left: 85%;
    width: 150px;
    height: 150px;
    animation-delay: 0s;
    animation-duration: 11s;
}



@keyframes animate {

    0%{
        transform: translateY(0) rotate(0deg);
        opacity: 1;
        border-radius: 0;
    }

    100%{
        transform: translateY(-1000px) rotate(720deg);
        opacity: 0;
        border-radius: 50%;
    }

}

.bo {
    font-family: 'Exo', sans-serif;
    color: #fff;
    font-size: 20px;
    padding-left: 9px;
}

.img {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 150px;
}

.bo h2 {
    text-align: center;
}