style.css

html {
    font-family: 'Satoshi', sans-serif;
}
body {
    text-align: center;
    font-family: 'Satoshi', sans-serif;
    font-weight: 800;
}
header {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    overflow: hidden;
    background-color: rgba(248, 248, 248,.9);
    z-index: 2;
    box-shadow:0 1px 0 rgba(0,0,0,.1),0 1px 2px rgba(0,0,0,.1);
}
h1 {
    font-weight: 100;
    font-size: 3em;
    margin: 5px 0;
    font-family: 'Clash Grotesk', sans-serif;
}
p {
    margin: 0;
}
p.label {
    margin-top: 80px;
}
div.eight-ball {
    position: relative;
    background-color: black;
    border: 1px solid black;
    border-radius: 50%;
    width: 300px;
    height: 300px;
    margin: 0 auto;
    box-shadow:0 1px 0 rgba(99, 15, 255, 0.1),0 1px 2px rgba(99, 15, 255, 0.1);
    z-index: -2;
}
div.answer {
    background-color: #14006e;
    border: 1px solid transparent;
    border-radius: 50%;
    width: 50%;
    height: 50%;
    margin: 25% auto;
}
div.blur {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: -1;
    background-color: #2f00ff;
    border: 1px solid transparent;
    border-radius: 50%;
    width: 50%;
    height: 50%;
    margin: 25% auto;
    filter:blur(45px);
}
p#eight {
    font-size: 5em;
    margin: 13% auto;
    color: white;
}
p#answer {
    padding: 25px;
    color: lightblue;
    letter-spacing: 2px;
}
button ,input {
    margin: 15px 2.5px;
    padding: 10px;
    background-color: white;
    border: 1px solid black;
    border-radius: 10px;
    cursor: pointer;
    font-size: 1.2em;
    font-family: 'Satoshi', sans-serif;
    font-weight: 800;
    letter-spacing: 2px;
    transition: .1s all;
}
button:hover {
    background-color: black;
    color: white;
}

.back {
    display: fixed;
    position: absolute;
    bottom: 0;
    left: 0;
    font-family: Roboto, sans-serif;
  font-weight: 700;
  font-size: 16px;
  text-transform: uppercase;
  outline: none;
  border: none;
  border-radius: 8px;
  color: white;
  background: #000;
  padding: 10px 20px;
  background: linear-gradient(to bottom right, #e6e603, #f6951b);
  text-shadow: 0 2px 2px rgba(0, 0, 0, 0.3);
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.15);
  transition: padding 0.2s;
}

.shake {
    animation: shake 150ms 10 linear;
  }
  @keyframes shake {
    0% {
      transform: translate(3px, 0);
    }
    50% {
      transform: translate(-3px, 0);
    }
    100% {
      transform: translate(0, 0);
    }
  }

.wrapper {
    display: flex;
    flex-direction: column;
}

@media screen and (max-width: 337px) {
    button, input {
        font-size: 1.1em;
    }
}