style.css

html {
  font-family: sans-serif;
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  background: url(BG.JPG) no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}
body {
  margin: 0;
}

.wht-bar {
  background-color: rgba(255, 255, 255, 0.829);
  margin: 0 auto;
  display: block;
  width: 660px;
  height: 515px;
  box-shadow: 1px 1px 8px #888888;
  text-align: center;
  border-radius: 3px;
}

.wrapper {
  width: 100%;
  margin-top: 180px;
}

.logo {
  margin: 0 auto;
  position: absolute;
  box-shadow: 2px 4px 10px #616161;
  border-radius: 100px;
}

.logo-myuic {
  margin: 0 auto;
  padding-top: 120px;
}

.logo-wrapper {
  margin: 0 auto;
  width: 100%;
  padding-top: 23px;
  padding-left: 200px;
}

.usname {
  border: none;
  border-bottom: 1px solid rgb(59, 59, 59);
  background-color: transparent;
  width: 280px;
  text-align: center;
  padding-bottom: 15px;
  font-family: "Helvetica Neue";
  font-size: 15px;
  color: #616161;
}
@media only screen and (min-width: 650px) {
}
@media only screen and (min-width: 768px) {
  .wrapper {
    width: 680px;
    margin: 0 auto;
    margin-top: 110px;
  }
  .logo-wrapper {
    width: 680px;
    margin: 0 auto;
    margin-top: 10px;
    padding-left: 450px;
  }
}
.password {
  border: none;
  border-bottom: 1px solid rgb(59, 59, 59);
  background-color: transparent;
  width: 280px;
  text-align: center;
  padding-bottom: 15px;
  font-family: "Helvetica Neue";
  font-size: 15px;
  color: #616161;
}
form {
  padding-top: 48px;
}
button {
  background-color: #d6647b;
  color: white;
  width: 115px;
  height: 50px;
  border: none;
  margin-top: 35px;
  box-shadow: 2px 4px 8px #616161;
  font-size: 15px;
}