style.css

/* Password Generator CSS */

*,
*:before,
*:after {
  box-sizing: border-box;
}

html,
body,
.wrapper {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Bodoni Moda', serif;
  background: black;
}

main {
  display: flex;
}

.wrapper {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 50%;
  padding: 2rem 1rem 0;
  position: relative;
  z-index: 1;
}

.bg-wrapper {
  position: fixed;
  top: 0;
  height: 100%;
  margin-left: 50%;
}

.bg-image {
  background-image: url('./assets/images/bg.jpg');
  background-repeat: no-repeat;
  background-size: cover;
  height: 100vh;
  width: 50vw;
}

header {
  padding: 0 0 1.5rem 3rem;
  color: rgb(153, 152, 154);
}

header h1 {
  font-family: 'Fulgent', serif;
  font-weight: 400;
  font-size: 2.5rem;
  letter-spacing: 0.5rem;
  text-transform: uppercase;
}

.card {
  color: rgb(153, 152, 154);
  background: rgba(22, 22, 22, 0.75);
  font-size: 1.25rem;
  max-width: 800px;
  padding: 2rem 3rem 4rem;
}

.card-body {
  min-height: 100px;
}

.card-body h2 {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 2px;
  text-transform: lowercase;
}

/* FORM */
form label {
  font-size: 1.1rem;
  letter-spacing: 1px;
  text-transform: lowercase;
}
/* length range */
.range-container {
  width: 100%;
  margin: 2rem 0;
}

.range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 25px;
  margin: 1rem 0;
  background: #252525;
  outline: none;
  opacity: 0.7;
  transition: all 0.2s;
}

.range-slider:hover,
.range-slider:focus {
  opacity: 1;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 25px;
  height: 25px;
  background: black;
  border: 1px solid rgba(153, 152, 154, 0.7);
  cursor: pointer;
}

.range-slider:focus::-webkit-slider-thumb,
.range-slider:focus::-moz-range-thumb {
  outline: 1px solid;
}

.range-slider::-moz-range-thumb {
  width: 25px;
  height: 25px;
  background: black;
  border: 1px solid rgba(153, 152, 154, 0.4);
  cursor: pointer;
}

.inline-form {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}

/* checkbox */
.form-group {
  display: block;
  margin-bottom: 15px;
  position: relative;
}

.form-group input {
  padding: 0;
  height: initial;
  width: initial;
  margin-bottom: 0;
  position: absolute; /* instead of display:none, use absolute to make this keyboard focusable */
  top: 3px;
  z-index: -1;
  cursor: pointer;
}

.form-group label {
  position: relative;
  cursor: pointer;
}
.form-group label:before {
  content: '';
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-color: black;
  border: 1px solid rgba(153, 152, 154, 0.4);
  padding: 12px;
  display: inline-block;
  position: relative;
  vertical-align: middle;
  cursor: pointer;
  margin-right: 5px;
}

.form-group input:focus + label::before {
  border-color: rgb(153, 152, 154);
}

.form-group input:checked + label:before {
  background: black;
}

.form-group input:checked + label:after {
  content: '';
  display: block;
  position: absolute;
  top: 4px;
  left: 11px;
  width: 6px;
  height: 1.2rem;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* password*/
#password {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  display: block;
  width: 100%;
  background: rgba(153, 152, 154, 0.2);
  color: rgba(153, 152, 154);
  font-size: 1.5rem;
  font-family: 'Bodoni Moda', serif;
  margin: 2rem 0 0.5rem;
  padding: 1rem 3rem 2rem 1rem;
  border: 1px solid transparent;
  opacity: 0.7;
  resize: none;
  overflow: hidden;
}

#password::placeholder {
  text-transform: lowercase;
}

#password:hover,
#password:focus,
#password:focus-visible {
  opacity: 1;
}

#password.error-message {
  color: rgb(153, 152, 154);
  font-style: italic;
}

.btn {
  border: 1px solid rgba(153, 152, 154, 0.4);
  background-color: black;
  color: rgb(208, 208, 208);
  display: inline-block;
  line-height: 2rem;
  margin: 2rem 0 1rem;
  padding: 0.5rem 1.5rem;
  font-family: 'Bodoni Moda', serif;
  font-size: 0.9rem;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 7px;
  cursor: pointer;
}

.btn:hover {
  color: white;
  border-color: white;
}

button[disabled] {
  cursor: default;
  color: rgba(0, 0, 0, 0.1);
}

/* copy icon */
.password-textarea {
  position: relative;
}

.gg-copy {
  box-sizing: border-box;
  position: absolute;
  right: 15px;
  top: 15px;
  display: block;
  width: 14px;
  height: 18px;
  border: 1px solid;
  margin-left: -5px;
  margin-top: -4px;
  cursor: pointer;
  z-index: 1;
}

.gg-copy:after,
.gg-copy:before {
  content: '';
  display: block;
  box-sizing: border-box;
  position: absolute;
}

.gg-copy:before,
.gg-copy:after {
  transition: 0.2s all linear;
}

.gg-copy:before {
  background: linear-gradient(to left, currentColor 5px, transparent 0)
      no-repeat right top/5px 1px,
    linear-gradient(to left, currentColor 5px, transparent 0) no-repeat left
      bottom/ 1px 5px;
  box-shadow: inset -2px -2px 0 -1px;
  bottom: -6px;
  right: -6px;
  width: 14px;
  height: 18px;
}

.gg-copy:after {
  width: 6px;
  height: 1px;
  background: currentColor;
  left: 2.5px;
  top: 2.5px;
  box-shadow: 0 4px 0, 0 8px 0;
}

.gg-copy.copied:before {
  width: 0;
}

.gg-copy.copied:after {
  width: 0;
}

footer {
  display: flex;
  justify-content: flex-end;
  width: 100%;
  padding: 0 1rem;
  color: rgb(153, 152, 154);
  position: relative;
  z-index: 1;
}

@media (max-width: 1199.99px) {
  .wrapper {
    width: 100%;
  }
}

@media (min-width: 1366px) {
  .wrapper {
    margin-left: 15%;
  }

  header h1 {
    position: fixed;
    font-size: 3.75rem;
    margin-left: 10vw;
    margin-top: -5rem;
    width: 100%;
  }

  h1:before {
    background-color: rgba(153, 152, 154, 0.4);
    content: '';
    display: inline-block;
    height: 1px;
    position: relative;
    vertical-align: middle;
    width: 50%;
    right: 0.5em;
    margin-left: -50%;
  }
}

@media (min-width: 1920px) {
  header h1 {
    font-size: 5rem;
    margin-left: 18vw;
  }
}

@media (min-width: 768px) {
  main {
    height: 100vh;
  }

  footer {
    position: fixed;
    bottom: 0;
  }
}

@media (max-width: 690px) {
  .card {
    padding: 1rem;
  }
  .inline-form {
    flex-direction: column;
  }

  .btn {
    font-size: 1rem;
    margin: 1rem 0 0 0;
    padding: 0.75rem 1rem;
  }

  #password {
    font-size: 1rem;
  }
}

@media (max-width: 450px) {
  header {
    padding: 0;
  }

  #password {
    padding-bottom: 4rem;
  }

  footer {
    justify-content: center;
  }
}