Edit in JSRun


            
<div class="form">
  <div class="username">
    <input type="text" placeholder="USERNAME"/>
  </div>
  <div class="password">
    <input type="password" placeholder="PASSWORD"/>
  </div>
  <div class="login">
    <span>log in</span>
  </div>
</div>
* { box-sizing: border-box }
.form {
  height: 18.75em;
  width: 25em;
  background: #fff;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  text-transform: uppercase;
  font-family: "Bebas Neue", Arial;
  color: #fff;
}

.form > div {
  height: 6.25em;
  width: 100%;
}

.username {
  background-color: #4daf7c;
}

.username::after {
  content: "";
  width: 0px;
  height: 0px;
  position: absolute;
  border-style: solid;
  border-width: 0.5em 0.469em 0 0.469em;
  border-color: #4daf7c transparent transparent transparent;
  top: 6.25em;
  left: 50%;
  margin-left: -0.496em;
}

.password {
  background-color: #404241;
}

.password::after {
  content: "";
  width: 0px;
  height: 0px;
  position: absolute;
  border-style: solid;
  border-width: 0.5em 0.469em 0 0.469em;
  border-color: #404241 transparent transparent transparent;
  top: 12.5em;
  left: 50%;
  margin-left: -0.496em;
}

.login {
  background-color: #e9c85d;
  display: table;
}

.login span {
  display: table-cell;
  vertical-align: middle;
  text-align: center;
  font-size:3em;
  cursor: pointer;
}

input {
  height: 1.25em;
  width: 8.125em;
  font-size: 2em;
  text-align:center;
  border: 0;
  outline: 0;
  color: #fff;
  background: transparent;
  border:0.033em #fff solid;
  margin-left: 2.1875em;
  margin-top: 1em;
  font-family: "Bebas Neue", Arial;
}