.image1 {
    background-image: url('/img/membership.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
.shad {
    box-shadow: 0px 2px 15px 9px rgba(0,0,0,0.53);
    -webkit-box-shadow: 0px 2px 15px 9px rgba(0,0,0,0.53);
    -moz-box-shadow: 0px 2px 15px 9px rgba(0,0,0,0.53);
}

.cbutton {
    --color: rgba(0, 0, 0, 0.507);
    font-family: inherit;
    display: inline-block;
    width: 8em;
    height: 2.6em;
    line-height: 2.5em;
    position: relative;
    overflow: hidden;
    border: 2px solid var(--color);
    transition: color .5s;
    z-index: 1;
    font-size: 17px;
    border-radius: 6px;
    font-weight: 500;
    color: var(--color);
}

.cbutton:before {
    content: "";
    position: absolute;
    z-index: -1;
    background: var(--color);
    height: 125px;
    width: 400px;
    border-radius: 50%;
}
.cbutton:hover {
    color: #fff;
}
.cbutton:before {
    top: 100%;
    left: 100%;
    transition: all .7s;
}
.cbutton:hover:before {
    top: -30px;
    left: -30px;
}

.cbutton:active:before {
    background: #009A00;
    transition: background 0s;
}