404.css

@keyframes spin {
  from {
    transform: rotate(0);
  }
  to{
    transform: rotate(359deg);
  }
}

@keyframes spin3D {
  from {
    transform: rotate3d(.5,.5,.5, 360deg);
  }
  to{
    transform: rotate3d(0deg);
  }
}

@keyframes configure-clockwise {
  0% {
    transform: rotate(0);
  }
  25% {
    transform: rotate(90deg);
  }
  50% {
    transform: rotate(180deg);
  }
  75% {
    transform: rotate(270deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes configure-xclockwise {
  0% {
    transform: rotate(45deg);
  }
  25% {
    transform: rotate(-45deg);
  }
  50% {
    transform: rotate(-135deg);
  }
  75% {
    transform: rotate(-225deg);
  }
  100% {
    transform: rotate(-315deg);
  }
}

@keyframes pulse {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: .25;
    transform: scale(.75);
  }
}

/* GRID STYLING */

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  background-color: #1d2630;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: flex-start;
}

.spinner-box {
  width: 300px;
  height: 300px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: transparent;
}
.configure-border-1 {
    width: 115px;
    height: 115px;
    padding: 3px;
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #fb5b53;
    animation: configure-clockwise 3s ease-in-out 0s infinite alternate;
  }
  
  .configure-border-2 {
    width: 115px;
    height: 115px;
    padding: 2px;
    left: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgb(63,249,220);
    transform: rotate(45deg);
    animation: configure-xclockwise 3s ease-in-out 0s infinite alternate;
  }
  
  .configure-core {
    width: 100%;
    height: 100%;
    background-color: #1d2630;
  }
  h1{
    margin-top: 25%;
    margin-left:-120%;
    font-size: larger;
  }