* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    background: linear-gradient(90deg, #373737 0%, #2d2d2d 50%, #1a1a1a 100%);
}

body {
    min-height: 100%;
}
@media (max-width: 640px) {

}
.spinner {
    display: inline-block;
    margin: -4px 20px -4px 20px;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(127, 255, 212, 0.3);
    border-radius: 50%;
    border-top-color: #7FFFD4;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}