.mail-icon {
    position: absolute;
    bottom: 0px;
    right: 10px;
    width: 18px;
    height: 16px;
    background: transparent;
    border: 2px solid  rgb(104, 104, 104); 
    /* transform: rotate(45deg);  */
    opacity: 0;
    transform-origin: center;
    /* transform: scale(0) rotate(45deg); */
    transition: transform 0.3s ease, border-color 0.3s ease;
    cursor: pointer;
    border-radius: 3px;
    transition: 0.3s ease;
}
.mail-icon::before {
    content: '';
    position: absolute;
    top: 9px;
    left: 7px;
    width: 10px;
    height: 10px;
    background: transparent;
    border-top: 2px solid  rgb(104, 104, 104);
    border-left: 2px solid  rgb(104, 104, 104);
    transform: rotate(225deg);
    transform-origin: top left;
}

.center.loaded .mail-icon {
    opacity: 1;
    animation: insideToOut 0.5s ease-out forwards, blink 1.5s ease-in-out infinite;
    transform: scale(1) rotate(45deg);
    animation-delay: 0s, 0.5s;
}
.mail-icon:hover {
    scale: 1.4;
}