*{
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
} 
:root{
    --background-color: hsla(216, 96%, 9%, 0.807);
    --color: #fff;
    --header-background:#333;
    --answer-bg:hsla(0, 0%, 50%, 0.05);
    --answer-color: #281c1c;
    --border-color: hsla(180, 0%, 44%, 0.535);
}
/*HEADER*/ 
header{
    margin: 0 0 15px 0;
    padding: 15px 0;
    background-color: #333;
    color: #fff; 
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-evenly;
}
header a{
    margin: 0;
    padding: 10px 15px;
    font-size: 12px;
    border: solid;
    color: #fff;
    box-shadow: 0 0 10px rgb(113, 113, 113);
    border-radius: 5px;
}
.content-title{
    text-align: center;
    margin: 10px;
}
/*OPTIONS*/
.option-container{
    display: flex;

}
.conics-option{
    position: relative;
    display: inline-block;
    margin: 0 10px;
}
.option-btn {
    background-color: transparent;
    color: white;
    padding: 10px 15px;
    font-size: 16px;
    border: solid 3px var(--border-color);
    border-radius: 10px;
    cursor: pointer;
}
.option-content{
    display: none;
    position: absolute;
    background-color: #fff;
    min-width: 160px;
    border-radius: 10px;
}
.option-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    border-radius: 10px;
    box-shadow: none;
    border: solid 1px;
    display: block;
    text-align: center;
}
.option-content a:hover {
    background-color: #333;
    color: #fff;
}
.conics-option:hover .option-content {
    display: block;
}
/**/
/*CONTAINER*/
.ellipse-calcu{
    box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
    border-radius: 10px;
    width: 300px;
    height: 100%;
    padding: 30px;
    margin: 0;
    color: #333; 
}
.ellipse-calcu h1{
    margin: 10px auto;
    font-size: 20px; 
    text-align: center; 
}
.container{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    margin: 10px 0;
}
.ellipse-calcu input{
    display: flex;
    padding: 8px;
    margin: 0 auto;
    width: 100%;
}
.answer-container{
    width: 800px;
    border-radius: 10px;
    box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
    visibility: hidden;
}
.answer-container .answer-title{
    padding: 15px;
    font-size: 20px;
    text-align: center;
}
/*STEPS*/
.steps{
    padding: 20px;
    font-family: Arial, Helvetica, sans-serif;
}
.steps h1{
    font-size: 17px; 
}  
.answer{
    background-color: var(--answer-bg);
    padding: 10px;
    margin: 10px 0;
    border: 1px solid var(--border-color);
}
.transform-btn{
    background-color: #333;
    color: hsl(240, 83%, 67%);
    font-weight: bold;
    padding: 10px 14px;
    width: 100%;
} 
/*Graph Container*/

.graph canvas{
    margin: 10px;
}
.graph-container ul li{
    display: inline;
    margin: 0 15px; 
    text-align: center; 
    align-items: center;
}
/*Reminder*/
.reminderContainer{
   display: none;
   padding: 20px;
   text-align: center;
   border-radius: 10px;
   border: solid;
   width: 250px;
   margin: 0 auto;
}
#message {
    margin-top: 10px;
    font-size: 20px;
    margin: 40px 0;
    text-align: center;
}
#showMessageBtn{
    margin: 30px auto;
    padding: 8px 5px;
    background-color: hsla(120, 97%, 61%, 0.658);
    border-radius: 10px;
    width: 150px;
    font-size: 15px;
}
.showAnswerBtn{
    padding: 5px 10px;
    background-color: green;
    margin: 10px auto;
    width: 300px;
    border: solid 1px;
    border-radius: 8px;
    color: white;
 }
/*allsteps*/

.finalAnswerBgColor{
    background-color: hsl(60, 78%, 75%);
}
.users-answer-container{
    height: 100%;
    font-size: 16px;
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    text-align: center;
    align-items: center;
    justify-content: center;
    border: none;
    box-shadow: rgba(50, 50, 93, 0.25) 0px 2px 5px -1px, rgba(0, 0, 0, 0.3) 0px 1px 3px -1px;
    width: 400px;
    margin: 20px auto;
    padding: 20px 10px;
}
.users-answer-container h1{
    font-size: 20px;
}
.users-answer-container input{
    display: inline;
    width: 150px;
    padding: 5px 10px;
    border-radius: 4px;
    border: solid 1px;
}
.user-btn{
    margin: auto auto;
    padding: 5px 10px;
    background-color: hsla(120, 97%, 61%, 0.658);
    border: solid 1px;
    border-radius: 8px;
}
.correct{
    color: green;
}
.wrong{
    color: red;
}
.answer-each-parts{
    margin: 0 auto;
    text-align: center;
    font-size: 18px;
    border: none;
    width: 400px;
    padding: 10px 20px;
}
.users-answer-container input{
    margin: 10px 0;
}
.arrow-down{
    transform: rotate(90deg);
    margin: 0 10px;
    padding: 2px 5px;
    font-size: 15px;
    background-color: white;
    border-radius: 3px;
    color: black;
}
@media only screen and (max-width: 643px) {
    header a{
        padding: 10px;
        font-size: 10px;
    }
    /*Options*/
    .option-container{ 
        display: block;
    }
    .option-btn{
        font-size: 13px;
        width: 200px;
        margin: 10px 0;
    }
    .option-content{
        z-index: 1;
        width: 200px;
    }
    /**/
    .content-title{
        font-size: 15px;
    }
    .ellipse-calcu{
        width: 100%;
        margin: 10px 8px;
        padding: 15px;
        text-align: center; 
    }
    .transform-btn{
        width: 100%; 
        font-weight: 600;
        border-radius: 10px;
    }
    .ellipse-calcu h1{
        width: 100%;
    }
    .ellipse-calcu label{
        margin: 0;
        font-size: 14px;
    }
    .ellipse-calcu input{
        width: 200px;
        margin: 0 auto;
        padding: 8px 5px;
        text-align: center;
    }
    .answer-container{
        width: 100%;
        margin: 20px 0;
    }
    /*Steps*/
    .answer-container{
        margin: 10px 8px;
        width: 100%;
    }
    .answer-container .steps{
        padding: 5px 10px;
    }
    .steps h1{
        font-size: 14px;
        color: #333; 
    }
    /*Graph*/
    .graph #canvas{
        width: 100%;
    } 
    /*Reminder*/
.reminderContainer{
    font-size: 13px;
    margin: 0 auto;
    text-align: center;
    border-radius: 10px;
    }
    #message {
    margin-top: 10px;
    font-size: 20px;
    margin: 40px 0;
    }
    #showMessageBtn{
    margin: 30px 0;
    padding: 10px 10px;
    border-radius: 10px;
    width: 150px;
    font-size: 15px;
    }
    /*allsteps*/
.users-answer-container{
    height: 100%;
    font-size: 16px;
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    text-align: center;
    align-items: center;
    justify-content: center;
    border: none;
    box-shadow: rgba(50, 50, 93, 0.25) 0px 2px 5px -1px, rgba(0, 0, 0, 0.3) 0px 1px 3px -1px;
    width: 100%;
    margin: 20px auto;
    padding: 10px 0;
}
.users-answer-container h1{
    font-size: 15px;
}
.users-answer-container input{
    display: inline;
    width: 150px;
    padding: 5px 10px;
    border-radius: 4px;
    border: solid 1px;
    text-align: center;
}
.user-btn{
    margin: auto auto;
    padding: 5px 10px;
    background-color: hsla(120, 97%, 61%, 0.658);
    border: solid 1px;
    border-radius: 8px;
}
.correct{
    color: green;
}
.wrong{
    color: red;
}
.answer-each-parts{
    margin: 0 auto;
    text-align: center;
    font-size: 14px;
    border: none;
    width: 100%;
    padding: 10px 0px;
}
.users-answer-container input{
    margin: 10px 0;
}
.showAnswerBtn{
    width: 100%;
  }
}