h1{
text-align: center;
color: #FF9933;
}

.img-center{
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}

.multicolor-text{
    text-align: center;
    font-size: larger;
    background-clip: text;
    background: linear-gradient(to left,#FFFFFF,#06038D,#FFFFFF);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent; 
  }

h3{
    text-align: center;
    color: #FFFFFF;
  }

h5{
    text-align: center;
    color: #138808;
  }

body{
    font-family: Arial, sans-serif;
    background-color: #1e1e1e;
    color: #ffffff;
  }

#calculator-container{
    width: 400px;
    margin: 50px auto;
    padding: 20px;
    border: 1px solid #444;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
    background-color: #333;
  }

input{
    width: calc(100% - 20px);
    margin-bottom: 10px;
    padding: 10px;
    font-size: 16px;
    background-color: #444;
    color: #ffffff;
    border: none;
    border-radius: 5px;
  }

table{
    width: 100%;
  }

tr{
    text-align: center;
  }

button{
    width: 100%;
    padding: 10px;
    margin: 5px;
    font-size: 16px;
    cursor: pointer;
    background-color: #555;
    color: #ffffff;
    border: none;
    border-radius: 5px;
  }

.numeral-system-selector{
    margin-bottom: 10px;
  }

#age-calculator, #interest-calculator, #sip-calculator, #date-difference-calculator,
#base-calculator, #percentage-calculator, #fuel-consumption-calculator, #units-calculator,
#mortgage-calculator, #geometry-calculator, #bmi-calculator {
    display: none;
  }