.flex-container {
	display: flex; 
    flex-wrap: wrap; 
	justify-content: space-between; 
	padding: 5px 4px;
}

.flex-item {
	flex: 100%; 
	max-width: 100%; 
	padding: 0 4px;
}

.flex-item-r {
	flex: 50%; 
	max-width: 50%; 
	padding-right: -20px;
}

.flex-item-l {
	flex: 50%; 
	max-width: 50%; 
	padding-left: 10px
}

@media (max-width: 600px) {
  .flex-item-r , .flex-item-l {
    flex: 100%;
    max-width: 100%;
	padding: 0 4px;
  }
}

.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1000; /* Sit on top */
  padding-top: 10px; /* Location of the box */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  overflow: auto; /* Enable scroll if needed */
  background-color: rgb(0,0,0); /* Fallback color */
  background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
}

/* Modal Content */
.modal-content {
  background-color: #fefefe;
  margin: auto;
  padding: 20px;
  border: 1px solid #888;
  width: 80%;
}

/* The Close Button */
.close {
  color: #aaaaaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
}

.close:hover,
.close:focus {
  color: #000;
  text-decoration: none;
  cursor: pointer;
}

.vid-tuto {
	margin-top: 3px; 
	vertical-align: middle; 
	width: 100%; 
	height: auto; 
	object-fit: fill; 
	object-position: bottom;
}

.btn {
  background-color: #4CAF50; /* Green */
  border: none;
  color: white;
  /*padding: 15px 32px;*/
  padding: 10px 25px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
  -webkit-transition-duration: 0.4s; /* Safari */
  transition-duration: 0.4s;
}

.btn-modal:hover {
  box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
}