mypads.css

html {
  height: 100%;
}

body {
  background: unset;
  border: unset;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  margin: 0;
}

div#mypads {
  max-width: 300px;
  width: 100%;
}

form#password-form {
  height: 38px;
  background: #fff;
  position: relative;
  border-color: var(--color-fg);
  border-radius: unset;
  border-style: solid;
  border-width: 3px;
}

form#password-form > input[type="password"] {
  border: none;
  box-sizing: border-box;
  font-size: 15px;
  font-weight: bold;
  height: 38px;
  line-height: 36px;
  max-width: 350px;
  outline: none;
  padding: 0px 40px 0 10px;
  width: 100%;
}

form#password-form > button {
  background-color: var(--color-fg);
  border: unset;
  color: var(--color-bg);
  cursor: pointer;
  font-size: 15px;
  font-weight: bold;
  height: 38px;
  position: absolute;
  left: calc(100% - 45px);
  top: 0;
  width: 45px;
}