stylus/install-usercss/install-usercss.css

body {
  margin: 0;
  font: 12px arial, sans-serif;
  background: white;
}

a {
  color: #000;
  transition: color .5s;
  text-decoration-skip: ink;
}

a:hover {
  color: #666;
}

img.icon,
svg.icon {
  height: 1.4em;
  vertical-align: middle;
}

.container {
  display: flex;
  height: 100vh;
  align-items: stretch;
}

.main {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.header,
.warnings {
  flex: 0 0 280px;
  box-sizing: border-box;
  padding: 15px;
  border-right: 1px dashed #aaa;
  box-shadow: 0 0 50px -18px black;
  overflow-wrap: break-word;
  overflow-y: auto;
  z-index: 100;
}

.header:not(.meta-init) {
  visibility: hidden;
}

.header.meta-init-error {
  display: none;
}

.warnings {
  display: none;
  padding-bottom: 0;
  flex-basis: auto;
  background: #ffe2e2;
  border-right: none;
  border-bottom: 1px dashed #aaa;
}

.has-warnings .warnings {
  display: initial;
}

.warning {
  font-weight: bold;
  font-size: 125%;
  margin-bottom: 1em;
}

.warning pre {
  overflow-wrap: break-word;
  white-space: pre-wrap;
  margin: 1ex 0 0;
  font-weight: normal;
  font-size: 80%;
}

.header > :first-child {
  margin-top: 0;
}

h1 small {
  font-size: 0.6em;
}

.meta-version::before {
  content: " v";
}

.actions {
  margin-bottom: 1em;
}

.actions label {
  max-width: -moz-fit-content;
  max-width: fit-content;
  display: flex;
  align-items: center;
  margin: 0.5em 0;
}

.install {
  padding: 1ex 1em;
  font-weight: bold;
  margin-bottom: 1ex;
}

.actions label input {
  margin: 0 0.5em 0 0;
  flex: 0 0 auto;
}

.actions label span {
  min-width: 0;
}

.external {
  text-align: center;
}

.external > * {
  margin: 0 7.5px;
}

li {
  margin-left: -2em;
}

.main {
  overflow: hidden;
}

.main .CodeMirror {
  height: auto;
  border: none;
}

/************ reponsive layouts ************/

@media (max-width:10in) {
  .container {
    flex-direction: column;
  }
  .header {
    flex-basis: auto;
    border-right: none;
    border-bottom: 1px dashed #AAA;
    max-height: 50%;
    overflow-x: auto;
    overflow-y: hidden;
  }
  .has-warnings .header {
    min-height: 4em;
    max-height: 20%;
  }
  .warnings {
    max-height: 20%;
  }
  .warning:not(:last-child) {
    border-bottom: 1px dashed #b57c7c;
    padding-bottom: 1em;
  }
  .header,
  .warning {
    -webkit-column-count: 3;
    -moz-column-count: 3;
    column-count: 3;
  }
  h1 {
    -webkit-column-span: all;
    column-span: all;
    margin-bottom: .5em;
  }
  .actions {
    display: flex;
  }
  .install {
    margin-right: 1em;
  }
}

@media (max-width:7in) {
  .header,
  .warning {
    -webkit-column-count: 2;
    -moz-column-count: 2;
    column-count: 2;
  }
}

@media (max-width:4in) {
  .header {
    overflow-x: hidden;
    overflow-y: auto;
    max-height: 100%;
  }
  .header,
  .warning {
    -webkit-column-count: 1;
    -moz-column-count: 1;
    column-count: 1;
  }
  .warning {
    border: none;
    padding-bottom: unset;
  }
}