body {
    margin: 0;
}
* {
    font-family: 'Source Sans Pro', sans-serif;
}
.header {
    position: relative;
    display: flex;
    width: 100%;
    height: 120px;
    background-color: #ebb608;
    opacity: 0.8;
}
.header h1 {
    position: relative;
    left: 30px;
    color: black;
}
.header p {
    position: relative;
    left: 30px;
    color: rgb(66, 59, 59);
    top: -20px;
}
.content h2 {
    position: relative;
    left: 480px;
    width: 400px;
    color: black;
}
.content__instruction {
    position: relative;
    left: 400px;
    width: 500px;
    color: black;
    font-weight: 400;
    font-size: 18px;
}
.bluda {
    position: relative;
    text-decoration: none;
    top: 250px;
    left: 140px;
    color: #000000;
    font-weight: 400;
    font-size: 20px;
}
.bluda:hover {
    color: rgb(32, 29, 201);
}
button {
    position: relative;
    left: 450px;
    top: 40px;
    padding: 1em 1.8em;
    outline: none;
    border: 1px solid #222020;
    background: #1a1818;
    color: #ffe600;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 15px;
    overflow: hidden;
    transition: 0.2s;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
   }
   
   button:hover {
    box-shadow: 0 0 10px #ff5e00, 0 0 25px #001eff, 0 0 50px #ff9b04;
    transition-delay: 0.6s;
   }
   
   button span {
    position: absolute;
   }
   
   button span:nth-child(1) {
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #ff9900);
   }
   
   button:hover span:nth-child(1) {
    left: 100%;
    transition: 0.7s;
   }
   
   button span:nth-child(3) {
    bottom: 0;
    right: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #ff5100);
   }
   
   button:hover span:nth-child(3) {
    right: 100%;
    transition: 0.7s;
    transition-delay: 0.35s;
   }
   
   button span:nth-child(2) {
    top: -100%;
    right: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, transparent, #ffd900);
   }
   
   button:hover span:nth-child(2) {
    top: 100%;
    transition: 0.7s;
    transition-delay: 0.17s;
   }
   
   button span:nth-child(4) {
    bottom: -100%;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(360deg, transparent, #fffb00);
   }
   
   button:hover span:nth-child(4) {
    bottom: 100%;
    transition: 0.7s;
    transition-delay: 0.52s;
   }
   
   button:active {
    background: #e70707;
    background: linear-gradient(to top right, #ffc401, #ff4800);
    color: #bfbfbf;
    box-shadow: 0 0 8px #ae00ff, 0 0 8px #001eff, 0 0 8px #ae00ff;
    transition: 0.1s;
   }
   
   button:active span:nth-child(1) 
   span:nth-child(2) 
   span:nth-child(2) 
   span:nth-child(2) {
    transition: none;
    transition-delay: none;
   }
   @keyframes move {
    100% {
        transform: translate3d(0, 0, 1px) rotate(360deg);
    }
}

.background {
    position: fixed;
    width: 100vw;
    height: 100vh;
    top: 0;
    left: 0;
    background: #f9f58b;
    overflow: hidden;
}

.background span {
    width: 14vmin;
    height: 14vmin;
    border-radius: 14vmin;
    backface-visibility: hidden;
    position: absolute;
    animation: move;
    animation-duration: 50;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}


.background span:nth-child(0) {
    color: #ffdd00;
    top: 84%;
    left: 95%;
    animation-duration: 6s;
    animation-delay: -1s;
    transform-origin: -2vw -24vh;
    box-shadow: -28vmin 0 4.139441112609735vmin currentColor;
}
.background span:nth-child(1) {
    color: #ffdd00;
    top: 22%;
    left: 37%;
    animation-duration: 6s;
    animation-delay: -1s;
    transform-origin: -21vw 18vh;
    box-shadow: 28vmin 0 4.22785502268289vmin currentColor;
}
.background span:nth-child(2) {
    color: #ffdd00;
    top: 21%;
    left: 100%;
    animation-duration: 6s;
    animation-delay: -1s;
    transform-origin: -12vw -5vh;
    box-shadow: -28vmin 0 4.315681999761812vmin currentColor;
}
.background span:nth-child(3) {
    color: #d9f505;
    top: 28%;
    left: 76%;
    animation-duration: 6s;
    animation-delay: -1s;
    transform-origin: 13vw 1vh;
    box-shadow: 28vmin 0 3.679701693641977vmin currentColor;
}
.background span:nth-child(4) {
    color: #ff4000;
    top: 35%;
    left: 2%;
    animation-duration: 6s;
    animation-delay: -1s;
    transform-origin: -22vw 8vh;
    box-shadow: -28vmin 0 3.6679924188211483vmin currentColor;
}
.background span:nth-child(5) {
    color: #ffdd00;
    top: 73%;
    left: 86%;
    animation-duration: 6s;
    animation-delay: -1s;
    transform-origin: 11vw 12vh;
    box-shadow: 28vmin 0 4.0603514324911645vmin currentColor;
}
.background span:nth-child(6) {
    color: #ffdd00;
    top: 51%;
    left: 97%;
    animation-duration: 6s;
    animation-delay: -1s;
    transform-origin: 12vw -2vh;
    box-shadow: 28vmin 0 3.892224391964228vmin currentColor;
}
.background span:nth-child(7) {
    color: #ffdd00;
    top: 40%;
    left: 39%;
    animation-duration: 6s;
    animation-delay: -1s;
    transform-origin: -22vw -18vh;
    box-shadow: -28vmin 0 4.334794587751122vmin currentColor;
}