.clearfix {
    clear: both;
}

button .language:hover {
    text-decoration: underline;
}

main {
    background-color: rgba(50, 128, 128, 0.7);   
}

.avatar {
    width: 100%;
}

@keyframes slideInFromLeft {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }   
}
  
.page {  
    animation: 1s ease-in-out 0s 1 slideInFromLeft;    
}