.form-signin {
    width: 100%;
    max-width: 330px;
    padding: 15px;
    margin: auto;
    border: 2px solid grey;
    border-radius: 5px;
}  
label {
    display: inline-block;
    margin-bottom: 5px;
    font-size: 18px;
}
p {
    margin-bottom: 25px; 
}
#caption{
    width:300px;
    height:50px;
}
button{
    color: #ffffff !important;
    text-transform: uppercase;
    background: #4CAF50;
    padding: 10px;
    border: 3px solid #4CAF50 !important;
    border-radius: 6px;
    display: inline-block;
}
button:hover {
    color: #ffffff !important;
    background: #367c39;
    border-color: #367c39 !important;
    transition: all 0.4s ease 0s;
}
*,
*:before,
*:after {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 2rem 1.5rem;
  font: 1rem/1.5 "PT Sans", Arial, sans-serif;
  color: #5a5a5a;
}