Loading Button Animation CSS

loading-button.css

button {
    padding: 20px 50px;
    font-size: 1.5rem;
    cursor: pointer;
    border: 0px;
    background: transparent;
    position: relative;
    margin: 20px;
    transition: all .25s ease;
    background: rgba(116, 23, 231, 1);
    border-radius: 28px;
    color: #fff;
    overflow: hidden;
}

button:active {
    transform: scale(.85);
}

button.activeLoading .loading {
    visibility: visible;
    opacity: 1;
}

button .loading {
    opacity: 0;
    visibility: hidden;
}

.btn-7 {
    border-radius: 0px;
}

.loading {
    transition: all .25s ease;
}

.loading-7 {
    position: absolute;
    left: 10px;
    bottom: 10px;
    width: calc(100% - 20px);
    height: calc(100% - 20px);
    background: rgb(116, 23, 231);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.loading-7 span {
    background: #fff;
    position: absolute;
}

.loading-7 .span1 {
    width: 100%;
    height: 5px;
    left: 0px;
    bottom: 0px;
    transform: translate(-100%);
    animation: loading7a 2s ease infinite;
}

.loading-7 .span2 {
    width: 5px;
    height: 100%;
    right: 0px;
    bottom: 0px;
    transform: translate(0, 100%);
    animation: loading7b 2s ease infinite;
}

.loading-7 .span3 {
    width: 100%;
    height: 5px;
    right: 0px;
    top: 0px;
    transform: translate(100%);
    animation: loading7c 2s ease infinite;
}

.loading-7 .span4 {
    width: 5px;
    height: 100%;
    left: 0px;
    top: 0px;
    transform: translate(0, -100%);
    animation: loading7d 2s ease infinite;
}

.loading-6 {
    position: absolute;
    left: 0px;
    bottom: 0px;
    width: 100%;
    height: 100%;
    background: rgb(116, 23, 231);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.loading-6:after {
    content: '';
    width: 40px;
    height: 40px;
    opacity: .5;
    position: absolute;
    border-radius: 50%;
    animation: loading6 1.5s ease infinite;
    border: 5px solid #fff;
}

.loading-6:before {
    content: '';
    width: 30px;
    height: 30px;
    background: #fff;
    position: absolute;
    border-radius: 50%;
    animation: loading6 1s ease infinite;
}

.loading-5 {
    position: absolute;
    left: 0px;
    bottom: 0px;
    width: 0%;
    height: 100%;
    background: rgba(116, 23, 231, .8);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    animation: loading5 1s ease infinite;
}

.loading-4 {
    position: absolute;
    left: 0px;
    bottom: 0px;
    width: 100%;
    height: 100%;
    background: rgba(116, 23, 231, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: inherit;
    overflow: hidden;
}

.loading-4 .span1 {
    width: 8px;
    height: 8px;
    background: #fff;
    border-radius: 50%;
    animation: loading4 1s ease infinite;
    position: absolute;
}

.loading-4 .span2 {
    width: 8px;
    height: 8px;
    background: #fff;
    border-radius: 50%;
    animation: loading4 1s ease infinite .33s;
    position: absolute;
}

.loading-4 .span3 {
    width: 8px;
    height: 8px;
    background: #fff;
    border-radius: 50%;
    animation: loading4 1s ease infinite .66s;
    position: absolute;
}


.loading-3 {
    position: absolute;
    left: 0px;
    bottom: 0px;
    width: 100%;
    height: 100%;
    background: rgba(116, 23, 231, .8);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: inherit;
    overflow: hidden;
}

.loading-3:after {
    content: '';
    position: absolute;
    width: 100%;
    height: 4px;
    bottom: 0px;
    animation: loading3 1s ease infinite;
    z-index: 10;
    background: rgba(255, 255, 255, 1);
    border-radius: 10px;
}


.loading-2 {
    position: absolute;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    background: rgba(116, 23, 231, .8);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: inherit;
    overflow: hidden;
}

.loading-2:after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    animation: loading2 1s ease infinite;
    z-index: 10;
    background: rgba(255, 255, 255, .25);
}

.loading-2:before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    animation: loading2 1s ease-out infinite;
    z-index: 10;
    background: rgba(255, 255, 255, .25);
}


.loading-1 {
    position: absolute;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    background: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: inherit;
}

.loading-1:after {
    content: '';
    position: absolute;
    border-radius: 50%;
    border: 3px solid #fff;
    width: 30px;
    height: 30px;
    border-left: 3px solid transparent;
    border-bottom: 3px solid transparent;
    animation: loading1 1s ease infinite;
    z-index: 10;
}

.loading-1:before {
    z-index: 5;
    content: '';
    position: absolute;
    border-radius: 50%;
    border: 3px dashed #fff;
    width: 30px;
    height: 30px;
    border-left: 3px solid transparent;
    border-bottom: 3px solid transparent;
    animation: loading1 1s linear infinite;
}

@keyframes loading7d {
    0% {
        transform: translate(0, -100%);
    }

    25% {
        transform: translate(0, -100%);
    }

    50% {
        transform: translate(0, -100%);
    }

    75% {
        transform: translate(0, -100%);
    }

    100% {
        transform: translate(0, 100%);
    }
}

@keyframes loading7c {
    0% {
        transform: translate(100%);
    }

    25% {
        transform: translate(100%);
    }

    50% {
        transform: translate(100%);
    }

    75% {
        transform: translate(-100%);
    }

    100% {
        transform: translate(-100%);
    }
}

@keyframes loading7b {
    0% {
        transform: translate(0, 100%);
    }

    25% {
        transform: translate(0, 100%);
    }

    50% {
        transform: translate(0, -100%);
    }

    100% {
        transform: translate(0, -100%);
    }
}

@keyframes loading7a {
    0% {
        transform: translate(-100%);
    }

    25% {
        transform: translate(100%);
    }

    100% {
        transform: translate(100%);
    }
}

@keyframes loading6 {
    0% {
        transform: scale(0);
    }

    50% {
        transform: scale(1);
    }

    100% {
        transform: scale(0);
    }
}

@keyframes loading5 {
    0% {
        width: 0px;
        left: 0px;
        right: auto;
    }

    50% {
        width: 100%;
        left: 0px;
        right: auto;
    }

    51% {
        width: 100%;
        left: auto;
        right: 0px;
    }

    100% {
        width: 0%;
        left: auto;
        right: 0px;
    }
}

@keyframes loading4 {
    0% {
        transform: translate(-40px) scale(0);
    }

    50% {
        transform: translate(0px) scale(1);
    }

    100% {
        transform: translate(40px) scale(0);
    }
}

@keyframes loading3 {
    0% {
        width: 0%;
    }

    50% {
        width: 100%;
    }

    100% {
        width: 100%;
        opacity: 0;
    }
}

@keyframes loading2 {
    0% {
        transform: translate(0, 100%);
    }

    100% {
        transform: translate(0, -100%);
    }
}

@keyframes loading1 {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}