Untitled

<form>

  <input type="text" placeholder="username" name="firstname"><br><br>

  <input type="password" name="lastname" placeholder="password" name="firstname"><br><br>

  <input type="submit" name="botao" value="Botao">

</form>

* {

  border: none;

  margin: 0;

  padding: 0;

}

body {

  padding: 50px;

}

input[type=text], input[type=password] {

box-sizing: border-box;

background-color: #fff;

border: 1px solid #ddd;

color: #999;

cursor: text;

font-size: 12px;

height: auto;

margin: 0 0 0 0;

padding: 10px;

  width: 100%;

}

input[type=text]:focus, input[type=password]:focus {

  border-color: #F18120;

  outline-color: #F18120;

}

input[type=submit] {

-webkit-box-shadow: 0 1px 0 rgba(0,0,0,.1);

box-shadow: 0 1px 0 rgba(0,0,0,.1);

background-color: #fff;

background-image: -webkit-linear-gradient(top,transparent,transparent);

background-image: linear-gradient(top,transparent,transparent);

border: 1px solid #b8b8b8;

color: #404040;

  -webkit-border-radius: 2px;

border-radius: 2px;

cursor: default;

font-size: 12px;

font-weight: bold;

text-align: center;

white-space: nowrap;

margin-right: 16px;

height: 34px;

line-height: 34px;

min-width: 54px;

outline: 0;

padding: 0 14px;

}