HTMLify

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial;
  transition: all 0.3s;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background-color: #f4f4f4;
}

.main {
  background-color: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 2px 2px 15px rgba(0, 0, 0, 0.5);
  text-align: center;
  height: 350px;
}

h1 {
  margin-bottom: 15px;
}

input {
  border: 1px black solid;
  border-radius: 5px;
  margin: 10px 0px;
  padding: 3px 5px;
}

.calc {
  padding: 3px 6px;
  font-size: 2vh;
  margin: 15px;
  border: 1px black solid;
  border-radius: 5px;
  background-color: #fff;
  color: green;
}

#result {
  height: 8vh;
}

#reset {
  padding: 3px 6px;
  font-size: 2vh;
  margin: 15px;
  border: 1px black solid;
  border-radius: 5px;
  background-color: #fff;
  color: red;
}

#reset:hover {
  color: #fff;
  background-color: red;
}

.calc:hover {
  color: #fff;
  background-color: green;
}

.bmi-line {
  width: auto;
  height: 20px;
  background: linear-gradient(
    to right,
    yellow 0%,
    lightgreen 35%,
    lightcoral 75%,
    darkred 100%
  );
  border-radius: 10px;
  overflow: hidden;
  /* position: relative; */
}

.bmi-mark {
  font-size: 11px;
  color: #333;
  display: flex;
  justify-content: space-between;
  width: auto;
  margin: 3px;
  padding: 0px 10px;
}

.BMI {
  margin: 30px;
}

.BMI a {
  color: blue;
}

.love {
  display: flex;
  justify-content: center;
  margin-top: 10vh;
  font-family: "Courier New";
  align-items: center;
  color: #8a8f99;
}

.art {
  margin: 5px;
  font-weight: 800;
  color: rgb(199, 25, 25);
}