*,
body,
html {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, Helvetica, sans-serif;
}
img{
  width: 300px;
  height: 400px;
  border-radius: 1rem;
  margin: 10px, 10px, 10px, 10px;
}

h1 {
  font-size: 2.5rem;
  color: #262626;
  background-color: #d7dbd3;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  text-align: center;
  margin-top: 50px;
  margin-bottom: 50px;
}

.major-container {
  margin-top: 30px;
  margin-bottom: 30px;
}


.navbar-brand {
  background-color:#d7dbd3;
  height: 80px;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
}
.card-container{
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.hide {
  display: none;
}

.show{
  display: inline-block;
}

.footer {
  background-color: #d7dbd3;
  height: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 2rem;
}

.btn {
  background: #36a2eb;
  width: 300px;
  height: 50px;
  margin-top: 10px;
    margin-bottom: 10px;
    cursor: pointer;
    box-shadow: 0 4px 15px 0 rgba(65, 132, 234, 0.75);
  background-image: -webkit-linear-gradient(top, #36a2eb, #36a2eb);
  background-image: -moz-linear-gradient(top, #36a2eb, #36a2eb);
  background-image: -ms-linear-gradient(top, #36a2eb, #36a2eb);
  background-image: -o-linear-gradient(top, #36a2eb, #36a2eb);
  background-image: linear-gradient(to bottom, #36a2eb, #36a2eb);
  -webkit-border-radius: 28;
  -moz-border-radius: 28;
  border-radius: 28px;
  -webkit-box-shadow: 0px 1px 3px #666666;
  -moz-box-shadow: 0px 1px 3px #666666;
  box-shadow: 0px 1px 3px #666666;
  font-family: Arial;
  color: #ffffff;
  font-size: 20px;
  padding: 10px 20px 10px 20px;
  text-decoration: none;
}

.btn:hover {
  background: #568c5b;
  background-image: -webkit-linear-gradient(top, #568c5b, #d3ffce);
  background-image: -moz-linear-gradient(top, #568c5b, #d3ffce);
  background-image: -ms-linear-gradient(top, #568c5b, #d3ffce);
  background-image: -o-linear-gradient(top, #568c5b, #d3ffce);
  background-image: linear-gradient(to bottom, #568c5b, #d3ffce);
  text-decoration: none;
}