style.css

@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@500;600;700&display=swap");

body {
  margin: 0;
  padding: 0;
  text-align: center;
  font-family: "Montserrat";
  /* background: rgb(34, 193, 195); */
  background: linear-gradient(
    0deg,
    #cc5333 0%,
    #23074d 100%
    
  );
  min-height: 100vh;
}
.bmi {
  color: white;
  width: 350px;
  position: absolute;
  top: 50%;
  left: 50%;
  background-color: black;
  transform: translate(-50%, -50%);
  padding: 20px;
  border-radius: 10px;
}
h2 {
  font-size: 30px;
  font-weight: 600;
}
.text {
  text-align: center;
}
#weight-unit,
#height-unit {
  color: black;
  text-align: left;
  font-size: 20px;
  font-weight: 200;
  outline: none;
  border: 1px solid black;
  border-radius: 10px;
  width: 200px;
  height: 35px;
  height: 35px;
  margin-top: 10px;
}
#weight:focus,
#height:focus {
  width: 250px;
  transition: 0.5s;
}
#result {
  color: white;
}
#btn {
  font-family: inherit;
  margin-top: 10px;
  border: blue;
  color: #000;
  background: gainsboro;
  width: 150px;
  padding: 10px;
  border-radius: 30px ;
  outline: white;
  cursor: pointer;
  transition: 0.5s;
}
#btn:hover {
  transform: scale(1.1);
  transition: 0.5s;
}

table {
  width: 650px;
  border-collapse: collapse;
  margin: 600px auto;
  margin-top: 700px;
  margin-bottom: 80px;
}

tr {
  background: rgb(68, 38, 105);
  color: white;
}

th {
  background: #0d0101;
  color: #fffbfb;
  font-weight: bold;
}

td,
th {
  padding: 10px;
  border: 1px solid #000;
  text-align: center;
  font-size: 18px;
}

#bmichart {
  display: block;
    box-sizing: border-box;
    height: 759px;
    width: 1519px;
    margin-bottom: 80px;
    
}

#height, #weight {
  height: 35px;
  margin-top: 10px;
}
.footer_social{
  color: white;
}