body {
    overflow: hidden;
    font-family: 'Source Code Pro', monospace;
}
input {
    padding: 1rem;
    margin-top: 1rem;
}
h1 {
    font-weight: 700;
    margin: 0;
}
p {
    font-weight: 400;
}
#container {
display: flex;           /* establish flex container */
flex-direction: column;  /* make main axis vertical */
justify-content: center; /* center items vertically, in this case */
align-items: center;     /* center items horizontally, in this case */
height: 100vh;
padding: 2rem;
}

.box {
max-width: 800px;
margin-top: -5rem;
text-align: center;     /* will center text in <p>, which is not a flex item */
}

#confetti-wrapper {
overflow: hidden;
position: absolute;
z-index: -1;
height: 100%;
width: 100%;
}

.confetti {
width: 15px;
height: 15px;
background-color: #f2d74e;
position: absolute;
left: 50%;
animation: confetti 5s ease-in-out -2s infinite;
transform-origin: left top;
}

.confetti:nth-child(1) {
background-color: #FCF6B0;
left: 10%;
animation-delay: 0;
}

.confetti:nth-child(2) {
background-color: #78531E;
left: 20%;
animation-delay: -5s;
}

.confetti:nth-child(3) {
background-color: #E3C47A;
left: 30%;
animation-delay: -3s;
}

.confetti:nth-child(4) {
background-color: #896C41;
left: 40%;
animation-delay: -2.5s;
}

.confetti:nth-child(5) {
background-color: #9A5F22;

left: 50%;
animation-delay: -4s;
}

.confetti:nth-child(6) {
background-color: #DDC571;
left: 60%;
animation-delay: -6s;
}

.confetti:nth-child(7) {
background-color: #8A5E25;
left: 70%;
animation-delay: -1.5s;
}

.confetti:nth-child(8) {
background-color: #FCDF73;
left: 80%;
animation-delay: -2s;
}

.confetti:nth-child(9) {
background-color: #4F3A20;
left: 90%;
animation-delay: -3.5s;
}

.confetti:nth-child(10) {
background-color: #F0E9A0;
left: 100%;
animation-delay: -2.5s;
}

.confetti:nth-child(11) {
background-color: #F0E9A3;
left: 72%;
animation-delay: -5.5s;
}

.confetti:nth-child(12) {
background-color: #F0E4A0;
left: 34%;
animation-delay: -2.8s;
}

.confetti:nth-child(13) {
background-color: #F0C9A0;
left: 100%;
animation-delay: -7.5s;
}

.confetti:nth-child(14) {
background-color: #F0B9A0;
left: 16%;
animation-delay: -8.5s;
}

@keyframes confetti {
0% {
transform: rotateZ(15deg) rotateY(0deg) translate(0, 0);
}
25% {
transform: rotateZ(5deg) rotateY(360deg) translate(-5vw, 20vh);
}
50% {
transform: rotateZ(15deg) rotateY(720deg) translate(5vw, 60vh);
}
75% {
transform: rotateZ(5deg) rotateY(1080deg) translate(-10vw, 80vh);
}
100% {
transform: rotateZ(15deg) rotateY(1440deg) translate(10vw, 110vh);
}
}