tool.css

body {
  background: black;
}

iframe {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(0, 0, 0, 0.5);
  height: 100%;
}

a {
  color: skyblue;
}

input[type='submit'] {
  border-radius: 1em;
  min-width: 5ch;
  min-height: 5ch;
}

input[type='search'],
input[type='submit'] {
  box-shadow: 0 0 10px white;
}

input[type='search'],
input[type='text'] {
  border-radius: 2em;
  padding: 1em;
  border: darkgray solid 0.2em;
  transition: 0.3s border-width;
}

input[type='search']:focus,
input[type='text']:focus {
  border-width: 0.5em;
}

@media (min-width: 1122px) {
  main {
    background-image: url(/bg.svg);
    background-repeat: no-repeat;
    background-size: cover;
    animation: pan 15s ease-in-out infinite alternate;
  }
  input[type='search'],
  input[type='submit'],
  input[type='text'] {
    box-shadow: 0 0 10px black;
  }
}

body {
  color: white;
  font-family: ui-monospace, 'Cascadia Mono', 'Cascadia Code', 'Consolas',
    'Segoe UI Mono', 'Ubuntu Mono', 'Roboto Mono', Menlo, Monaco, monospace;
}

main {
  color: white;
}
header {
  display: flex;
  align-items: center;
}
header img {
  padding-right: 1em;
}
header::after {
  content: '9701.ml';
}
main {
  position: absolute;
  top: 0;
  z-index: -10;
  left: 0;
  width: 100%;
  height: 100%;
  float: right;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.center {
  display: flex;
  justify-content: center;
  align-items: center;
}

textarea {
  resize: horizontal;
}

form {
  display: flex;
  justify-content: center;
  align-items: center;
}

form > * {
  margin: 1em;
}

@keyframes pan {
  from {
    background-position: 0% 0%;
  }
  to {
    background-position: left;
  }
}