body {
  margin: 0;
  font-family: Arial, sans-serif;
}

@media screen and (min-width: 769px) {
/* Container uses Flexbox to create columns */
.container {
  display: flex;
  min-height: 100vh; /* full page height */
}

/* Left column */
.sidebar {
  width: 25%;              /* or any width you want */
  background-color: #f4f4f4;
  padding: 20px;
  box-sizing: border-box;
}

/* Right column */
.main-content {
  flex: 1;                 /* takes up the remaining space */
  background-color: #ffffff;
  padding-top: 20px;
  padding-bottom: 20px;
  padding-left: 50px;
  padding-right: 50px;
  box-sizing: border-box;
}




}

@media screen and (max-width: 768px) {
/* Container uses Flexbox to create columns */
.container {
  display: flex;
  min-height: 100vh; /* full page height */
}

/* Left column */
.sidebar {
  display: none;
}

/* Right column */
.main-content {
  flex: 1;                 /* takes up the remaining space */
  background-color: #ffffff;
  padding: 20px;
  box-sizing: border-box;
}

}