body {
  margin: 0;
  padding: 0;
  background: url(fondo.jpg) no-repeat center top;
  background-size: cover;
  font-family: sans-serif;
}

table {
  margin: 0;
  border: 2px solid #353a46;
  background-color: #3abaf1;
  top: 50%;
  left: 50%;
  position: absolute;
  transform: translate(-50%, -50%);
}

td {
  padding: 10px 40px;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  font-size: 16px;
  border: none;
  box-sizing: border-box;
  border-bottom: 2px solid black;
  background: transparent;
}

label {
  font-size: 16px;
  font-weight: bold;
}

input[type="submit"] {
  font-size: 16px;
  background-color: #f3f3f3;
  color: black;
  font-weight: bold;
  border-radius: 20px;
  height: 40px;
  width: 200px;
  border: solid;
}

a {
  font-size: 12px;
}