form {
    padding: 20px 0;
    position: relative;
    z-index: 2;
}

form input {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    display: block;
    text-align: center;
    -webkit-transition-duration: 0.25s;
    transition-duration: 0.25s;
}

form button {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    
    cursor: pointer;
    font-size: 18px;
    -webkit-transition-duration: 0.25s;
    transition-duration: 0.25s;
}

.card-body{

    overflow: hidden
}

.bg-bubbles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.bg-bubbles li {
position: absolute;
list-style: none;
display: block;
width: 40px;
height: 40px;
background-color:  rgba(255, 255, 255, 0.15);
bottom: -160px;
-webkit-animation: square 25s infinite;
animation: square 25s infinite;
-webkit-transition-timing-function: linear;
transition-timing-function: linear;
}

.bg-bubbles li:nth-child(1) {
left: 10%;
}

.bg-bubbles li:nth-child(2) {
left: 20%;
width: 80px;
height: 80px;
-webkit-animation-delay: 2s;
animation-delay: 2s;
-webkit-animation-duration: 17s;
animation-duration: 17s;
}

.bg-bubbles li:nth-child(3) {
left: 25%;
-webkit-animation-delay: 4s;
animation-delay: 4s;
}

    .bg-bubbles li:nth-child(4) {
        left: 40%;
        width: 60px;
        height: 60px;
        -webkit-animation-duration: 22s;
        animation-duration: 22s;
        background-color: rgba(255, 255, 255, 0.15);
    }

.bg-bubbles li:nth-child(5) {
left: 70%;
}

    .bg-bubbles li:nth-child(6) {
        left: 80%;
        width: 120px;
        height: 120px;
        -webkit-animation-delay: 3s;
        animation-delay: 3s;
        background-color: rgba(255, 255, 255, 0.15);
    }

.bg-bubbles li:nth-child(7) {
left: 32%;
width: 160px;
height: 160px;
-webkit-animation-delay: 7s;
animation-delay: 7s;
}

.bg-bubbles li:nth-child(8) {
left: 55%;
width: 20px;
height: 20px;
-webkit-animation-delay: 15s;
animation-delay: 15s;
-webkit-animation-duration: 40s;
animation-duration: 40s;
}

    .bg-bubbles li:nth-child(9) {
        left: 25%;
        width: 10px;
        height: 10px;
        -webkit-animation-delay: 2s;
        animation-delay: 2s;
        -webkit-animation-duration: 40s;
        animation-duration: 40s;
        background-color: rgba(255, 255, 255, 0.15);
    }

.bg-bubbles li:nth-child(10) {
left: 90%;
width: 160px;
height: 160px;
-webkit-animation-delay: 11s;
animation-delay: 11s;
}
@-webkit-keyframes square {
0% {
-webkit-transform: translateY(0);
transform: translateY(0);
}

100% {
-webkit-transform: translateY(-700px) rotate(600deg);
transform: translateY(-700px) rotate(600deg);
}
}

@keyframes square {
0% {
-webkit-transform: translateY(0);
transform: translateY(0);
}

100% {
-webkit-transform: translateY(-700px) rotate(600deg);
transform: translateY(-700px) rotate(600deg);
}
}