_button-with-spinner.scss

$color--primary: #2b373e;
$color--secondary: #fff;

.btn {
    background: $color--secondary;
    border: 1px solid $color--primary;
    border-radius: 0;
    color: $tango;
    // font-family: $font;
    padding: 15px 30px;
    position: relative;
    text-align: center;
    text-transform: uppercase;
    transition: all .35s;

    &:before {
        border-radius: 50%;
        border: .2em dotted rgba($color--primary, 0.2);
        border-left: .2em solid $color--primary;
        content: " ";
        display: inline-block;
        height: 1.5em;
        left: 50%;
        margin: -.75em;
        opacity: 0;
        position: absolute;
        top: 50%;
        transition: all .35s;
        transform: translateZ(0);
        width: 1.5em;
    }

    // &:hover, &:focus {
    //     border-color: $color;
    //     color: $color;

    //     &:before {
    //         border-color: rgba($color, 0.2);
    //         border-left-color: $color;
    //     }
    // }

    &.loading {
        color: $white;

        &:before {
            animation: loadspin 1.1s infinite linear;
            opacity: 1;
        }
    }
}

@keyframes loadspin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}