html {
  font-size: 100%;
}
body {
  font-size: 15px;
  font-size: 0.9375rem;
  font-family: "Open sans", Helvetica, Arial, sans-serif;
  color: #666666;
  padding: 0;
}

.img-circle {
  width: 7rem;
  vertical-align: middle;
}

#head {
  text-align: center;
}

#title {
  font-size: 200%;
  font-weight: 600;
  margin: 1rem;
  vertical-align: middle;
}

#main {
  margin-top: 5%;
  margin-left: 30%;
  margin-right: 30%;
}

#intro {
  text-align: left;
}

.btn-black {
  background-color: rgba(0, 0, 0, 0.495);
  color: white !important; /* Ensure the text color is white */
  border: none;
  padding: 10px 20px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
  border-radius: 4px;
}

.img-large {
  width: auto;
  height: 200px; /* Maintain aspect ratio */
}