*{
   margin: 0;
   padding: 0;
   box-sizing: border-box;
   font-family: 'Poppins', sans-serif;
}

.container{
   width: 100%;
   min-height: 100vh;
   background: linear-gradient(135deg,#42039a,#90bafc);
   color: #fff;
   padding: 10px;
}

.calculator{
   width: 100%;
   max-width: 600px;
   margin-left: 10%;
   margin-top: 10%;
}

.calculator h1{
   font-size: 60px;
}

.calculator h1 span{
   color: #ffff76;
}

.input-box{
   margin: 40px 0;
   padding: 35px;
   border-radius: 10px;
   background-color: rgba(255,255,255,0.3);
   display: flex;
   align-items: center;
}

.input-box input{
   flex: 1;
   margin-right: 20px;
   padding: 14px 20px;
   border: 0;
   outline: 0;
   font-size: 18px;
   border-radius: 5px;
   position: relative;
}

.input-box button{
   background-color: #ffff76;
   outline: 0;
   border: 0;
   padding: 15px 30px;
   border-radius: 5px;
   font-weight: 500;
   color: #333;
   cursor: pointer;
}

.input-box input::-webkit-calendar-picker-indicator{
   top: 0;
   left: 0;
   right: 0;
   bottom: 0;
   width: auto;
   height: auto;
   position: absolute;
   background-position: calc(100% - 10px);
   background-size: 30px;
   cursor: pointer;
}

#result{
   font-size: 20px;
}

#result span{
   color: #ffff76;
}