UnderCover/undercover/static/styles.css

html {
  height: 100%;
}

::placeholder {
  color: #999;
}

span.logo {
  margin: 0;
  padding: 0.2em;
}

span.logo.left {
  color: black;
  background-color: white;
}

span.logo.right {
  color: white;
  background-color: black;
}

body {
  background-color: #f0f0f0;
  line-height: 200%;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  font-family: sans-serif;
}

h1, h2 {
  text-align: center;
}

h1 {
  user-select: none;
}

h2 {
  font-size: 100%;
  margin-top: 0;
  margin-bottom: 1em;
}

label {
  font-size: 100%;
  font-weight: bold;
  color: #eee;
  background-color: #757575;
  padding: 0.15em 0.5em;
}

input, textarea {
    font-family: sans-serif;
}

/* Small screens */
@media only screen and (max-width: 1080px) {
  body {
    width: 85vw;
  }
  h1 {
    font-size: 300%;
  }
  h2 {
    line-height: 100%;
  }
  input {
    font-size: 200%;
    width: 100%;
  }
  .letter-form {
    width: 100%;
  }
  dd {
    margin-bottom: 2em;
    margin-left: 0;
  }
  textarea {
    width: 80vw;
    font-size: 120%;
  }
  .bigtext {
    min-height: 40vh;
  }
}

/* Big screens */
@media only screen and (min-width: 1081px) {
  body {
    min-height: 98%;
    width: 40vw;
  }
  h1 {
    font-size: 300%;
  }
  input, textarea {
    margin-bottom: 0.5em;
    font-size: 105%;
  }
  dd {
    margin-left: 0.5em;
  }
  dt {
    margin-top: 0.5em;
  }
  dl {
    margin-top: 0;
  }
  #closingText {
    width: 50%;
  }
}

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

div.user {
  line-height: 125%;
}

div.user form {
  display: flex;
  flex-direction: row;
  font-size: 70%;
}

div.user form input, label {
  border-radius: 0;
}

div.user form input {
  font-size: 100%;
  border-style: solid;
  border-width: 1px;
  border-color: #ddd;
}

.black-white-button {
  font-weight: bold;
  border-radius: 0;
  border-style: none;
  color: white;
  background-color: black;
  transition-property: color, background-color;
  transition-duration: 300ms;
  transition-timing-function: ease-in;
}

.black-white-button:hover {
  color: black;
  background-color: white;
}

.logged-in {
  display: flex;
  flex-direction: row;
}

dl {
  display: flex;
  flex-grow: 1;
  flex-direction: column;
}

dd {
  display: flex;
}

textarea {
  flex-grow: 1;
  padding: 0.5em;
}

.bigtext {
  flex-grow: 1;
  min-height: 35vh;
  font-size: 90%;
}

.errors {
  color: #a40f0f;
}

.wipe {
  margin-left: auto;
  padding: 0.5em 1em 0.5em 1em;
}

#body {
  flex-grow: 1;
}

.wipe {
  padding: 10px 25px;
  font-family: "Roboto", sans-serif;
  font-weight: 500;
  background: black;
  outline: none !important;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  display: inline-block;
  text-decoration: none;
}

.up-wipe {
  border: 2px solid rgb(255, 255, 255);
  z-index: 1;
  color: white;
}

.up-wipe:after {
  position: absolute;
  content: "";
  width: 100%;
  height: 0;
  top: 0;
  left: 0;
  z-index: -1;
  background: rgb(255, 255, 255);
  transition: all 0.3s ease;
}

.up-wipe:hover {
  color: rgb(0, 0, 0);
}

.up-wipe:hover:after {
  top: auto;
  bottom: 0;
  height: 100%;
}