body {
                background: linear-gradient(132deg, #f44336, #E91E63, #9C27B0, #673AB7, #3F51B5, #2196F3,#03A9F4, #00BCD4, #009688, #4CAF50, #FFC107, #FF9800, #f44336, #E91E63, #9C27B0, #673AB7, #3F51B5, #2196F3,#03A9F4, #00BCD4, #009688, #4CAF50, #FFC107, #FF9800);
                background-size: 400% 400%;
                animation: BackgroundGradient 30s ease infinite;
            }
            
            @keyframes BackgroundGradient {
                0% {background-position: 0% 50%;}
                50% {background-position: 100% 50%;}
                100% {background-position: 0% 50%;}
            }
.baslik
{
    color: #fff;
    text-align: center;
    font-family: 'Fira Sans', sans-serif;
}
.arkalogin
{
    width: 300px;
    text-align: center;
    background: #fff;
    height: 300px;
    padding: 10px;
    margin: 50px auto;
}
.loginbaslik
{
    color: #888888;
    text-align: left;
    font-size: 19px;
    margin-top: 15px;
}
.giris
{
    width: 100%;
    height: 40px;
    margin-top: 10px;
    border: none;
    background: #E5E5E5;
    outline: none;
    padding: 0 10px;
}
.butonlogin
{
    width: 100%;
    margin-top: 10px;
    height: 40px;
    font-weight: bold;
    background: #2196F3;
    border: none;
    color: #fff;
    transition: all 250ms;
}
.butonlogin:hover
{
    background: #1E88E5;
}
body
{
    margin: 0;
}

.main {
    max-width: 385px;
    margin: 0 auto;
    background: white;
    padding: 25px;
    border-radius: 5px;
    margin-top: calc(10% - 55px);
}
  .login-or {
    position: relative;
    font-size: 18px;
    color: #aaa;
    margin-top: 10px;
            margin-bottom: 10px;
    padding-top: 10px;
    padding-bottom: 10px;
  }