style_energy.css

* {
    font-family:sans-serif;
    margin: 0;
    padding: 0;

}
body {
    margin: 0;
    padding: 1cm 5cm 0cm;
    display: flex;
    flex-wrap:wrap ;
    flex-direction: row;
    justify-content: center;
    height: 80vh; 
}

/*       */ 
nav{
    top: 0;
    margin: 0;
    width: 100vw;
    height: 2cm;
    background-color: rgb(23, 78, 166);  
    color: white;
    /* background-color: rgb(4, 20, 110); */
    display: flex;
    justify-content: space-between;
    position: fixed;
}

nav ul{
    display: flex;
    padding: 12px;
}

nav ul li{
  padding: 20px;
   color: white;
   font-size: large;
   margin-right: 0.5cm;
}
nav ul :hover {
text-decoration: underline;
}
a{
    text-decoration: none;
    color: inherit;
    font-size: large;
}    

nav div{
    display: flex;
    align-items: center;
    margin-left: 2vw;
}
/*        */ 
.er {
    height: 90%;
    margin: 5px;
    margin-top: 2cm;
    background-color: aliceblue ;
    border: 2px solid black;
}
.energy {
    width: 60%;
    flex-grow: 3;  
    display: flex;
    flex-direction: column;
}
.range {
    width: 30%;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}
.bar {
    color: black;
    margin: 0;
    height: 1cm;
    width: 100%;
    text-align: center;
    line-height: 2rem;
}
.htebar {
    background-color: aquamarine;
    text-align: left ;  
    font-weight: bold;    
}
.bbar{
    background-color: aquamarine;
    text-align: right ;
}
.box {
    border: 2px solid black;
    height: 75%;
    width: 75%;
    align-self: center;
    margin-top: 1cm;
    display: flex;
    flex-direction:column;
    flex-wrap: wrap;
    justify-content: start;
}
label{
    margin: 0;
    padding: 0;
    display:block;
    margin-top: 1cm ;
    height: 1cm;
}
label p {
    margin: 0;
    padding: 0;   
    display: inline-block;
    line-height: 2rem;
    height: 1rem;
    width: 2.5cm;
    font-size: large;
    padding-left: 10px;
}
label input{
    height: 0.5cm;
    font-weight: bold;
    font-size: large;
    width: 45%;

}
.result_board{
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    margin-top: 1cm;
}

#submit {
height: 1cm;
background-color: aquamarine;
border: 2px solid black;
font-size: large;
font-weight: bold;
border-radius: 0.5rem;
margin-left: 10px;
}
#submit:hover {
    background-color: aqua;
}
.result_drop {
    border: 2px solid black;
    height: 1cm;
    border-radius: 0.5rem;
    margin-right: 10px;
    width: 55%;
    display: flex;
    flex-direction: row;
    font-size: large;
}
.result_drop .ans {
   margin: 0px; 
   padding-left: 10px;
   width: 50%;
   line-height: 2.5rem;
}

.units {
    background-color: aquamarine;
    flex-grow:1 ;
    font-size: large;
    font-weight: bold;
    border: none;
    border-radius: 0px 7px 7px 0px;
}

.units option {
    height: 1cm;
    line-height: 1rem;
}

.wavebar {
    width: 100%;
    text-align: center;
    background-color: aquamarine;
    font-weight: bold;
    justify-self: start;
}
#wave-properties_img {
    width: 75%; 
    align-self: center; 
    margin-top: 3rem;
}
.region_color {
    height: 1cm;
    width:75%; 
    border: 2px solid black; 
    margin-top: 1cm;
    border-radius: 5px; 
    padding: 0.1rem; 
    align-self: center;
    text-align: center;
    line-height: 2.5rem;
    font-size: x-large;
    font-weight: bolder;
}
.error{
    margin: 2px;
    align-self: center;
    width: 50%;
    height: 1cm;
    color: black;
    text-align: center;
    line-height: 2rem;
    font-size: large;
    font-weight: bold;
}
.errorRed {
    background-color:red ;
}
.wave_properties_img {
    width: 60%; 
    align-self: center; 
    margin: 0px;
}