.birthday-main span {
    text-transform: uppercase;
}

.birthday-main .balloon {
    width: 100%;
    margin: 0 auto;
    padding-top: 30px;
    position: relative;
}

.birthday-main .balloon>div {
    width: 4rem;
    background: rgba(182, 15, 97, 0.9);
    border-radius: 80% 80% 80% 80%;
    margin: 0 auto;
    position: absolute;
    box-shadow: inset 17px 7px 10px rgba(182, 15, 97, 0.9);
    -webkit-transform-origin: bottom center;
}

.birthday-main .balloon>div:nth-child(1) {
    background: rgba(182, 15, 97, 0.9);
    left: 0;
    box-shadow: inset 10px 10px 10px rgba(135, 11, 72, 0.9);
    -webkit-animation: balloon1 6s ease-in-out infinite;
    -moz-animation: balloon1 6s ease-in-out infinite;
    -o-animation: balloon1 6s ease-in-out infinite;
    animation: balloon1 6s ease-in-out infinite;
}

.birthday-main .balloon>div:nth-child(1):before {
    color: rgba(182, 15, 97, 0.9);
}

.birthday-main .balloon>div:nth-child(2) {
    background: rgba(242, 112, 45, 0.9);
    left: calc(100%/6);
    box-shadow: inset 10px 10px 10px rgba(222, 85, 14, 0.9);
    -webkit-animation: balloon2 6s ease-in-out infinite;
    -moz-animation: balloon2 6s ease-in-out infinite;
    -o-animation: balloon2 6s ease-in-out infinite;
    animation: balloon2 6s ease-in-out infinite;
}

.birthday-main .balloon>div:nth-child(2):before {
    color: rgba(242, 112, 45, 0.9);
}

.birthday-main .balloon>div:nth-child(3) {
    background: rgba(45, 181, 167, 0.9);
    left: calc((100%/6)*2);
    box-shadow: inset 10px 10px 10px rgba(35, 140, 129, 0.9);
    -webkit-animation: balloon4 6s ease-in-out infinite;
    -moz-animation: balloon4 6s ease-in-out infinite;
    -o-animation: balloon4 6s ease-in-out infinite;
    animation: balloon4 6s ease-in-out infinite;
}

.birthday-main .balloon>div:nth-child(3):before {
    color: rgba(45, 181, 167, 0.9);
}

.birthday-main .balloon>div:nth-child(4) {
    background: rgba(190, 61, 244, 0.9);
    left: calc((100%/6)*3);
    box-shadow: inset 10px 10px 10px rgba(173, 14, 240, 0.9);
    -webkit-animation: balloon1 5s ease-in-out infinite;
    -moz-animation: balloon1 5s ease-in-out infinite;
    -o-animation: balloon1 5s ease-in-out infinite;
    animation: balloon1 5s ease-in-out infinite;
}

.birthday-main .balloon>div:nth-child(4):before {
    color: rgba(190, 61, 244, 0.9);
}

.birthday-main .balloon>div:nth-child(5) {
    background: rgba(180, 224, 67, 0.9);
    left: calc((100%/6)*4);
    box-shadow: inset 10px 10px 10px rgba(158, 206, 34, 0.9);
    -webkit-animation: balloon3 5s ease-in-out infinite;
    -moz-animation: balloon3 5s ease-in-out infinite;
    -o-animation: balloon3 5s ease-in-out infinite;
    animation: balloon3 5s ease-in-out infinite;
}

.birthday-main .balloon>div:nth-child(5):before {
    color: rgba(180, 224, 67, 0.9);
}

.birthday-main .balloon>div:nth-child(6) {
    background: rgba(242, 194, 58, 0.9);
    left: calc((100%/6)*5);
    box-shadow: inset 10px 10px 10px rgba(234, 177, 15, 0.9);
    -webkit-animation: balloon2 3s ease-in-out infinite;
    -moz-animation: balloon2 3s ease-in-out infinite;
    -o-animation: balloon2 3s ease-in-out infinite;
    animation: balloon2 3s ease-in-out infinite;
}

.birthday-main .balloon>div:nth-child(6):before {
    color: rgba(242, 194, 58, 0.9);
}

.birthday-main .balloon>div:before {
    color: rgba(182, 15, 97, 0.9);
    position: absolute;
    bottom: -15%;
    left: 34%;
    content: "▲";
    font-size: 1em;
}

.birthday-main span {
    font-size: 3em;
    color: white;
    position: relative;
}

@-webkit-keyframes balloon1 {
    0%,
    100% {
        -webkit-transform: translateY(0) rotate(-6deg);
    }
    50% {
        -webkit-transform: translateY(-20px) rotate(8deg);
    }
}

@-moz-keyframes balloon1 {
    0%,
    100% {
        -moz-transform: translateY(0) rotate(-6deg);
    }
    50% {
        -moz-transform: translateY(-20px) rotate(8deg);
    }
}

@-o-keyframes balloon1 {
    0%,
    100% {
        -o-transform: translateY(0) rotate(-6deg);
    }
    50% {
        -o-transform: translateY(-20px) rotate(8deg);
    }
}

@keyframes balloon1 {
    0%,
    100% {
        transform: translateY(0) rotate(-6deg);
    }
    50% {
        transform: translateY(-20px) rotate(8deg);
    }
}

@-webkit-keyframes balloon2 {
    0%,
    100% {
        -webkit-transform: translateY(0) rotate(6 eg);
    }
    50% {
        -webkit-transform: translateY(-30px) rotate(-8deg);
    }
}

@-moz-keyframes balloon2 {
    0%,
    100% {
        -moz-transform: translateY(0) rotate(6deg);
    }
    50% {
        -moz-transform: translateY(-30px) rotate(-8deg);
    }
}

@-o-keyframes balloon2 {
    0%,
    100% {
        -o-transform: translateY(0) rotate(6deg);
    }
    50% {
        -o-transform: translateY(-30px) rotate(-8deg);
    }
}

@keyframes balloon2 {
    0%,
    100% {
        transform: translateY(0) rotate(6deg);
    }
    50% {
        transform: translateY(-30px) rotate(-8deg);
    }
}

@-webkit-keyframes balloon3 {
    0%,
    100% {
        -webkit-transform: translate(0, -10px) rotate(6 eg);
    }
    50% {
        -webkit-transform: translate(-20px, 30px) rotate(-8deg);
    }
}

@-moz-keyframes balloon3 {
    0%,
    100% {
        -moz-transform: translate(0, -10px) rotate(6 eg);
    }
    50% {
        -moz-transform: translate(-20px, 30px) rotate(-8deg);
    }
}

@-o-keyframes balloon3 {
    0%,
    100% {
        -o-transform: translate(0, -10px) rotate(6 eg);
    }
    50% {
        -o-transform: translate(-20px, 30px) rotate(-8deg);
    }
}

@keyframes balloon3 {
    0%,
    100% {
        transform: translate(0, -10px) rotate(6 eg);
    }
    50% {
        transform: translate(-20px, 30px) rotate(-8deg);
    }
}

@-webkit-keyframes balloon4 {
    0%,
    100% {
        -webkit-transform: translate(10px, -10px) rotate(-8eg);
    }
    50% {
        -webkit-transform: translate(-15px, 20px) rotate(10deg);
    }
}

@-moz-keyframes balloon4 {
    0%,
    100% {
        -moz-transform: translate(10px, -10px) rotate(-8eg);
    }
    50% {
        -moz-transform: translate(-15px, 10px) rotate(10deg);
    }
}

@-o-keyframes balloon4 {
    0%,
    100% {
        -o-transform: translate(10px, -10px) rotate(-8eg);
    }
    50% {
        -o-transform: translate(-15px, 10px) rotate(10deg);
    }
}

@keyframes balloon4 {
    0%,
    100% {
        transform: translate(10px, -10px) rotate(-8eg);
    }
    50% {
        transform: translate(-15px, 10px) rotate(10deg);
    }
}