body{
    position: relative;
    margin: 0;
    padding: 0; 
    width: 100%;
    font-family: 'Montserrat', sans-serif;
    background:#F6F6F6;
    color: #000;
}
p{
    padding: 0;
    margin: 0;
}
#sub-title{
    margin: -20px 0 50px;
    text-align: center;
}
#text-one{
    font-size: 12px;
    font-weight: 600;
}
#result_value{
    font-weight: 600;
    margin-bottom: 15px;
}
#text-two{
    font-weight: 600;
}
.center-content{
    margin: 0 30px;
    padding: 0 30px;
}
.pad-cont{
    padding: 30px 0;
}
.result_cont{
    margin-bottom: 50px;
    padding-left: 5px;
}
.result_value{
    font-size: 48px;
}
#error{
    text-align: center;
    padding: 20px;
    background: #ff0c00c9;
    color: white;
    border-radius: 10px;
    margin-bottom: 30px;
    display: none;
}
.container{
    margin: 10px auto 0 ;
    display: flex;
    justify-content: center;
}
.row-one, .row-two{
    width: 100%;
    display: flex;
    margin-bottom: 50px;
}
.gender-cont, .height-cont{
    margin-right: 50px;
}
input, select {
    border: none;
    border-bottom: 1px solid rgb(34, 34, 34);
    margin-top:12px;
    background: #F6F6F6;
    font-size: 16px;
    padding: 5px;
}
#gender{
    width: 156px;
}
#age{
    width: 150px;
}
#weight_unit, #height_unit{
    margin-left: -5px;
}
input{
    width: 95px;
}
input:focus, select:focus{
    border: none;
    outline: none;
    border-bottom: 1px solid #000;
}


label{
    padding-left:5px ;
}
.btn{
    width: 100%;
    display: block;
    margin:100px auto 0;
    padding: 15px 0;
    font-weight: 600;
    background: #8D8DD3;
    color: #fff;
    border: none;
    border: 1px solid #8D8DD3;
    box-shadow: 0 6px 12px 0 rgba(0,0,0,0.24), 0 10px 30px 0 rgba(0,0,0,0.19);
}
.btn:focus{
    outline: none;   
}
.btn:hover{
    box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24), 0 17px 50px 0 rgba(0,0,0,0.19);
    transition: box-shadow 0.98s ease-in-out;
}
@media screen and (max-width: 600px){
    #gender{
        width: 136px;
    }
    #age{
        width: 130px;
    }
    input{
        width: 75px;
    }
    select{
        padding: 5px 5px 4px;
    }
}