index.css

html {
  background-image: url(./bg-.jpg);
  background-repeat: no-repeat;
  background-size: to bottom;
  font-family: "Poppins", sans-serif;
}
.title {
  color: darkblue;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh; 
  margin: 0; 
  padding: 10px;
}

.app {
  background-image: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.3),
    rgba(0, 0, 0, 0.6)
  );
  display: flex;
  flex-direction:column;
  min-height: 95%;
  width: 80%;
 
}

header {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 60px 15px 15px;
  margin-bottom: 40px;
}

header input {
  width: 300px;
  
  padding: 10px 15px;
  border: none;
  outline: none;
  border-radius: 16px;
  background-color: rgba(238, 230, 230, 0.5);

  color: #0f0f0f;
  font-size: 20px;
  font-weight: 300;
  transition: 0.2s ease-out;
}

header input:focus {
  background-color: rgba(255, 255, 255, 1);
}

button {
  margin-left: 5px;
  color: #313131;
  background-color: rgba(255, 255, 255, 0.5);
  border: none;
  outline: none;
  max-width: 300px;
  padding: 10px 15px;
  border-radius: 16px;
  font-size: 22px;
}

button:hover {
  background-color: rgba(255, 255, 255, 1);
}
main {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 25px 25px 50px;
}

.location .city {
  font-size: 38px;
  font-weight: 600;
  margin-bottom: 5px;
  color: #fff;
}

.location .date {
  color: #fff;
  font-size: 25px;
}

.current .temp {
  color: #fff;
  font-size: 105px;
  font-weight: 900;
  text-shadow: 1px 4px rgba(0, 0, 0, 0.5);
}
.current .temp span {
  font-weight: 500;
  text-shadow: 1px 4px rgba(0, 0, 0, 0.5);
}

.current .weather {
  color: #fff;
  font-size: 38px;
  font-weight: 600;
  text-shadow: 0px 2px rgba(0, 0, 0, 0.3);
  font-style: italic;
}