form > div {
  justify-content: center;
  display: flex;
}

input[type='text'],
input[type='password'] {
  border: 1px solid #666;
  padding: 3px 3px 3px 30px;
  background-repeat: no-repeat;
  background-position: 2px center;
  flex: 1;
  min-width: 100px;
  max-width: 175px;
  margin: 2px;
}

input[type='text'] {
  background-image: url(/img/1.gif);
  background-size: 22px;
}

input[type='password'] {
  background-image: url(/img/key.png);
}

button[type='submit'] {
  background-image: url(/img/seal_small.gif);
  width: 30px;
  height: 30px;
  vertical-align: middle;
  border: none;
  background-color: transparent;
  cursor: pointer;
}

.btn,
.btn:visited {
  display: block;
  width: fit-content;
  min-height: 20px;
  border: 1px solid #000;
  border-radius: 9px;
  text-decoration: none;
  padding: 0.5em 1em;
  margin: 0.5em auto;
  font-size: 150%;
  font-weight: bold;
  color: #fff;
  letter-spacing: 1.5px;
  background-image: linear-gradient(to top, #711, #c33);
  transition-property: padding, margin;
  transition-duration: 250ms;
}
.btn:hover {
  padding: 1em 1.5em;
  margin: 0 auto;
}
p:has(.btn) {
  padding: 1px;
}
p::after {
  content: '';
  display: block;
  clear: both;
}
p img {
  float: left;
  max-width: 40%;
}
p.right img {
  float: right;
}