/* Box Model Hack */
* {
    box-sizing: border-box;
  }
  
  /* Clear fix hack */
  .clearfix:after {
       content: ".";
       display: block;
       clear: both;
       visibility: hidden;
       line-height: 0;
       height: 0;
  }
  
  .clear {
      clear: both;
  }
  
  /******************************************
  /* BASE STYLES
  /*******************************************/


  /* margins */

body,
header ul{
    margin:0;
}

.baby div{
    margin: 0% 15% 0% 8%;
}
.why div{
    margin: 6% 26%;
}
.big div{
    margin: 9% 8%;
}

.medium div{
    margin: 9% 25%;
}
li{
    margin: 2% 3%;
    display:flex;
}

/* background colors */

.grit,
header {
    background: rgba(102,118,137,1); 
}
.grit {
    background-image: linear-gradient(rgba(102,118,137,1), rgba(49, 49, 47, 0.5)),
        url("https://i.postimg.cc/mr5v2Fc5/karate.png");
        background-size:cover;
}
.big {
    background: rgba(219,223,226,1);
}
footer{
    background: rgba(22,31,41,1);
}

/* navigation links */
li{
    float: left;
}
#cheeseburger{
    display: none;
}


/* headings */
.big h1{
    font-family: Roboto, Helvetica;
    font-size: 16px;
    font-weight: bolder;
    text-transform: uppercase;
}

h2{
    font-size: 45px;
    text-transform: uppercase;
    color: white;
}


/* font */
header,
section,
footer{
    font-family: Roboto, Helvetica, sans-serif;
    text-align: center;
}
.why,
.big,
.medium{
    color:black;
}
header,
footer{
    color:white;
}

/* paragraph sizes */
.grit p{
    font-size: 18px;
    font-weight: bold;
    color: white;
     margin-left: 6%;
}
.grit h2{
    margin-left: 6%;
}
.why p,
.medium p{
    font-size:18px;
    width: 100%;
}
.why h3,
.medium h3{
    text-transform: uppercase;
}

.big p{
    font-size:15px;
    font-family: Roboto, Arial, Helvetica, sans-serif;
    width: 100%;

}


/* buttons */
.big button{
    border:1px solid gray;
    height: 40px;
    width: 100px;
    background: rgba(220,223,226,1);
    font-family: Roboto, Helvetica;
    font-size: 12px;
    text-transform: uppercase;
}
.medium button{
    border:1px solid gray;
    height: 40px;
    width: 100px;
    background: white;
    font-family: Roboto, Helvetica;
    font-size: 12px;
    text-transform: uppercase;
}

.dono {
    margin-left: 30%;
    border-radius: 5px;
    background: white;
    text-transform: uppercase;
    color: rgba(102,118,137,1);
    font-family: Roboto, Helvetica;
    font-size: 10px;
    font-weight: bolder;
    height: 26px;
    width: 54px;
    border: none;
}


.big{
    display: flex;

}
.gym{
    float: left;
}
.big img{
    width:100%;
}
.visit{
    float:right;

}
.vidicon{
    width: 7%;
    float:left;
    margin-left: 40%;
} 
p.watch{
    margin: 10px auto;
    font-size: 18px;
    font-weight: lighter;
    margin-left: 6%;

}

/******************************************
  /* LAYOUT
  /*******************************************/
header,footer{
    height: 135px;
    clear: both;

}
section{
    width: 100%;
    float: left;
}
.baby{
    height: 365px;
}
.big{
    height: 530px;
}
.medium{
    height: 440px;
}
.logo{
    width:5%;
    margin-left: 20%;
    margin-right: 10%;
}
  
  /******************************************
  /* ADDITIONAL STYLES
  /*******************************************/
  @media screen and (max-width:979px) {
    .grit h2{
        font-size: 30px;
    }
  
}
@media screen and (max-width:844px) {
    header li,
    .why,
    .logo,
    .dono{
        display: none;
    }
    #cheeseburger{
        display:block;
        top:2%;
        color: lightgray;
        background: rgba(102,118,137,1);
        font-size: 30px;
    }
    header{
        height: 90px;
    }
    
}

  @media screen and (max-width:769px) {

header,
section,
footer {
    font-size:0.95em;
}

.why,
.medium p {
    display: none;
}
.medium div{
    margin: 20% 35%;
}

  }
@media screen and (max-width:728px) {
    p.watch{
        font-size: 15px;
    }
    .grit h2{
        font-size: 30px;
        width: 100%;

    }
    .grit{
        height: 300px;
    }
    .big{
        display: block;
    }
    .big div{
        width: 50%;
        margin: 0 auto;
        margin-top: 5%;
    }
    .gym,
    .visit{
        float: none;
    }
    .big img{
        display: none;
    }
}
@media screen and (max-width:769px) {
    .medium{
        height: 250px;
    }
    .medium div{
        margin: 11% 25%;
    }
    .medium h3{
        font-size: 18px;
    }
}
@media screen and (max-width:646px) {
    p.lg{
        display:none;
    }
    .grit{
        height:200px;
    }
    .grit h2{
        font-size: 25px;
        width: 100%;
    }
}
@media screen and (max-width:684px) {
    .grit h2{
    font-size: 28px;
    width: 100%;
}
}
@media screen and (max-width:612px) {
    .medium h3{
        font-size: 16px;
    }
}
@media screen and (max-width:606px) {
    .grit h2{
    font-size: 25px;
    width: 100%;
}
    p.watch{
    font-size: 13px;
    }
    .grit{
        height:200px;
    }
    .big p{
        display: none;
    }
    .big{
        height: 240px;
    }
    .medium{
        height:200px;
    }

}
@media screen and (max-width:537px) {
    .grit h2{
    font-size: 20px;
    width: 100%;
    }
    p.watch{
        font-size: 10px;
    }

    .grit{
        height:150px;
    }
}

@media screen and (max-width:465px) { 

    .big{
        height:240px;
    }
    .medium{
        height: 220px;
    }
}

@media screen and (max-width:425px) { 
    .medium{
        height: 200px;
    }

    section{
        width: 100%;
    }

    header li,
    .why{
        display: none;
    }
    #cheeseburger{
        display:block;
    }
    .lg,
    .big p,
    .medium p{
        display: none;
    }
}