@import url('https://fonts.googleapis.com/css?family=Rubik&display=swap');


body{
 background: #f6f6f6;
}

.contenitore{
 margin: 100px auto;
 background: #fff;
 border-radius: 7px;
 box-shadow: 1px 2px 4px rgba(0,0,0,.3);
}

.contenitore .heading{
 background-color: #4169E1;
 border-radius: 7px 7px 0px 0px;
 padding: 10px;
 color: #fff;
 text-align: center;
 font-family: "Rubik";
}

.regole{
 padding: 0px 20px 20px;
}

::-webkit-details-marker{
 float: right;
 margin-top: 3px;
}

details{
 background: #f6f6f6;
 padding: 10px 20px;
 border-radius: 7px;
 margin-top: 20px;
 font-family: "Rubik";
 font-size: 14px;
 letter-spacing: 1px;
 cursor: pointer;
}

details summary{
 outline: none;
}

.SendButton {
  background-color: ;
}