<style>
* {
  box-sizing: border-box;
}

input[type=text], select {
  width: 100%;
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 4px;
  resize: vertical;
}

label {
  padding: 12px 12px 12px 0;
  display: inline-block;
}

/*
.mybutton_red2 {
  width: 90%;
  background-color: #4CAF50;
  color: white;
  padding: 14px 20px;
  margin: 8px 0;
  border-radius: 4px;
  cursor: pointer;
} */

.mybutton_red3 {
  width: 90%;
  background-color: #4CAF50;
  color: white;
  padding: 14px 20px;
  margin: 8px 0;
  border-radius: 4px;
  cursor: pointer;
}

.mybutton_red4 {
  width: 10%;
  background-color: #4CAF50;
  color: white;
  padding: 14px 20px;
  margin: 8px 0;
  border-radius: 4px;
  cursor: pointer;
}

.mybutton_red {
  width: 100%;
  background : linear-gradient(#6D071A, #801818) ;
  color: white;
  padding: 14px 20px;
  margin: 8px 0;
  border-radius: 4px;
  cursor: pointer;
  border-bottom : 2px solid #FFD700 ;
  border-right : 2px solid #FFD700 ;
  box-shadow : 3px 3px 6px -3px black ;
}

.mybutton_red_sav {
  width: 100%;
  background-color: #AF4C50;
  color: white;
  padding: 14px 20px;
  margin: 8px 0;
  border-radius: 4px;
  cursor: pointer;
}

/*.mybutton {
  background-color: #45a049;
} */

.formulaire {
  border-radius: 5px;
  background-color: #f2f2f2;
  padding: 20px;
  margin-top: 180px;
}

.col-25 {
  float: left;
  width: 25%;
  margin-top: 6px;
}

.col-20 {
  float: left;
  width: 20%;
  margin-top: 6px;
}

.col-10 {
  float: left;
  width: 10%;
  margin-top: 6px;
}

.col-75 {
  float: left;
  width: 75%;
  margin-top: 6px;
}

.col-50 {
  float: right;
  width: 50%;
  margin-top: 6px;
}

/* Clear floats after the columns */
.row:after {
  content: "";
  display: table;
  clear: both;
}

/* Responsive layout - when the screen is less than 600px wide, make the two columns stack on top of each other instead of next to each other */
@media screen and (max-width: 600px) {
  .col-25, .col-50, .col-75, .mybutton {
    width: 100%;
    margin-top: 0;
  }
}
</style>