body{
    background: url('../img/idea_back1.png') no-repeat center center fixed;
    background-size: cover;
    height: 100vh;
    overflow-x: hidden;
}
.container-fluid{
    width: 90%;
    font-family: "Roboto", sans-serif;
}
.heading{
    margin-top: 80px;
}
.heading h1{
    color: #fff;
    font-weight: 700;
    font-size:60px;
    line-height: 1.3;
}
.h_peragraph{
    color:#fff;
    font-size:18px;
    margin-top:10px;
}
.form_box{
    background-color: rgba(225,225,225,0.7);
    padding: 40px;
    border-radius: 20px;
    margin-top: 80px;
    width: 90%;
}
.custom-form-control{
    width: 100%;
    border: none;
    outline: none;
    border-bottom: solid 2px #5b9f8f;
    background: transparent;
    margin-top: 10px;
    padding: 10px 0px;
}
.form-group label{
    font-weight: bold;
}
.calculate_btn {
    margin-top: 30px;
    padding: 10px 30px;
    border-radius: 10px;
    border: solid 2px #5b9f8f;
    transition: background-color 0.3s ease, color 0.3s ease;
    background-color: #5b9f8f;
    color: #fff;
}
.calculate_btn:hover {
    background-color: transparent;
    color: #000;
}
.r_img{
    text-align: center;
}
.r_img img{
    width: 100%;
}
.r_box{
    border-left: solid 3px #fff;
    height: 100%;
    padding: 0px 0px 0px 40px;
}
/* Chrome, Safari, Edge, Opera */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox */
input[type=number] {
  -moz-appearance: textfield;
}